Casa inteira

Spacious Villa with secure private pool, 7 bedrooms all with shower rooms

Galeria de fotos de Spacious Villa with secure private pool, 7 bedrooms all with shower rooms

Um edifício rústico de pedra com varanda de madeira, videiras roxas florida e folhagem verde.
Uma sala de estar ampla com piso de madeira, um conjunto de sofás, uma mesa de centro e uma cozinha ao fundo.
Uma piscina retangular com deck ladrilhado, rodeada por espreguiçadeiras e plantas em vasos.
Uma área de estar ao ar livre com lareira de pedra, móveis de madeira e luzes de corda.
Uma escada de madeira com corrimão, que leva a um quarto com teto alto e vigas aparentes.

Avaliações

10 de 10, Hóspedes adoram
Entre as melhores avaliações de hóspedes nesta área

Destaques

  • Conforto com espaço
    Hóspedes adoram o ambiente amplo que oferece a todos mais espaço para relaxar.
  • Equipamentos de praia
    Propriedades com equipamentos de praia são uma raridade na área.

Comodidades populares

  • Sacada
  • Piscina particular
  • Brinquedos
  • Churrasqueira
  • Geladeira
  • Internet

Explore a região

Confira no mapa
Ceaux-En-Couhé, Nouvelle-Aquitaine
  • Place, Vallée des Singes
    ‪19 min de carro‬
  • Place, Museu Le Cormenier
    ‪25 min de carro‬
  • Place, Futuroscope
    ‪59 min de carro‬
  • Airport, Poitiers (PIS-Biard)
    ‪51 min de carro‬

Quartos e camas

7 quartos (acomoda 18 pessoas)

Quarto 1

2 camas de solteiro e 1 cama King

Quarto 2

3 camas de solteiro

Quarto 3

1 cama King e 1 cama de solteiro

Quarto 4

1 cama de casal

Quarto 5

1 cama de casal

Quarto 6

1 cama de casal

Quarto 7

2 camas de solteiro

2 banheiros, 7 lavabos

Banheiro 1

Vaso sanitário · Apenas chuveiro · Secador de cabelo

Banheiro 2

Apenas chuveiro

Banheiro 3

Apenas chuveiro

Banheiro 4

Apenas chuveiro

Banheiro 5

Apenas chuveiro

Banheiro 6

Apenas chuveiro

Banheiro 7

Vaso sanitário · Apenas chuveiro

Banheiro 8

Vaso sanitário

Banheiro 9

Vaso sanitário

Espaços

Deque ou pátio
Varanda ou varanda coberta
Cozinha
Sacada
Área de recreação externa
Jardim
Espaço para refeições

Adicione as datas e descubra os preços

Propriedades semelhantes

Informações a área

Champagné-Saint-Hilaire

Em Champagné-Saint-Hilaire, esta casa de temporada está na zona rural e perto de parques temáticos. Locais como Abbaye Saint-Martin de Ligugé e Château Leray estão entre as principais atrações na área. Para quem gosta de admirar a natureza, as melhores opções são Les Bois de Saint-Pierre e Parc de Blossac. Se você estiver viajando com crianças, Vallée des Singes é uma ótima opção de atividade. Considere também os eventos e partidas em Circuit du Val de Vienne. Pesca e natação são ótimas oportunidades para se refrescar, mas você também pode tentar atividades como passeios a cavalo e mountain biking nos arredores.
Mapa
Ceaux-En-Couhé, Nouvelle-Aquitaine

Nos arredores

  • Vallée des Singes - 19 min de carro - 13.3 km
  • Museu Le Cormenier - 25 min de carro - 18.9 km
  • Catedral de Poitiers - 49 min de carro - 49.7 km
  • Universidade de Poitiers - 51 min de carro - 51.0 km
  • Futuroscope - 59 min de carro - 56.0 km

Opções nos arredores

  • Estação Couhé-Vérac, Ceaux-en-Couhé - 6 min de carro
  • Aeroporto Biard (PIS) - 34 min de carro

Restaurantes

  • ‪Relais Des Minieres - ‬14 min de carro
  • ‪Relais De Vivonne - ‬17 min de carro
  • ‪Le Relais des Minières - ‬14 min de carro
  • ‪Le Melkinn's - ‬12 min de carro
  • ‪Auberge du Clain - ‬14 min de carro

Perguntas frequentes

Spacious Villa with secure private pool, 7 bedrooms all with shower rooms tem piscina?

Sim, esta propriedade conta com uma piscina externa.

Quanto custa ficar em Spacious Villa with secure private pool, 7 bedrooms all with shower rooms?

A partir de 2 de nov. de 2026, os preços encontrados para uma estadia de 1 diária para 2 adultos em Spacious Villa with secure private pool, 7 bedrooms all with shower rooms em 6 de jan. de 2027 começam a partir de R$ 2.913, excluídos impostos e taxas. Este preço está baseado no valor mais baixo para uma diária encontrado nas últimas 24 horas para estadias nos próximos 30 dias. Os preços estão sujeitos a alteração. Escolha as datas da viagem para ver preços com maior precisão.

Spacious Villa with secure private pool, 7 bedrooms all with shower rooms é ideal para quem viaja com animais de estimação?

Não, animais de estimação não são permitidos nesta propriedade.

Quanto custa o estacionamento em Spacious Villa with secure private pool, 7 bedrooms all with shower rooms?

Estacionamento no local disponível na propriedade.

Qual é o horário de check-in em Spacious Villa with secure private pool, 7 bedrooms all with shower rooms?

Horário de início do check-in: 17h.

Qual é o horário de check-out em Spacious Villa with secure private pool, 7 bedrooms all with shower rooms?

Horário de check-out: 10h.

Onde fica Spacious Villa with secure private pool, 7 bedrooms all with shower rooms?

Na zona rural, casa de temporada ideal para famílias fica a 15 km de Vallée des Singes, Laby'Bois e Laby'Gazon. Laby'Arbustes e Laby'Infernal também ficam a 15 km.

Avaliações

10

Extraordinária

A menos que indicado de outra maneira, as avaliações aparecem em ordem cronológica, estão sujeitas a um processo de moderação e são verificadas.
Mais informaçõesAbre em uma nova janela
Nota 10 - Excelente. 74 de 79 avaliações
Nota 8 - Boa. 5 de 79 avaliações
Nota 6 - Ok. 0 de 79 avaliações
Nota 4 - Insatisfatória. 0 de 79 avaliações
Nota 2 - Terrível. 0 de 79 avaliações

9,8/10

Limpeza

10/10

Check-in

10/10

Comunicação

9,4/10

Localização

10/10

Precisão do anúncio

Avaliações

Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio
We had a lovely stay at this gîte. The house offers everything you need for a multi-generational family holiday. It is very well-equipped and spacious. The surroundings are beautiful and calm. Very friendly and helpful host!
Hospedou-se por 6 diárias em ago. de 2026
Resposta de VrboOwner em 17 de ago. de 2026
We are so happy that you enjoyed your holiday with us at Le Gite du Pontreau and we would love to welcome you back. Kind regards Julia
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

An excellent location with super hosts

The property is in an excellent location for a brilliant family holiday in a quiet location not far from many attractions for the whole family to enjoy and a couple of hours drive from the coast. Excellent swimming pool and other facilities on site. The hosts Julia & Eric were superb and extremely helpful, definately 5 star all round.
Hospedou-se por 8 diárias em ago. de 2023
Resposta de VrboOwner em 6 de set. de 2023
Hello Clive, Thank you for your glowing review and we are thrilled that you and all your family enjoyed your holiday so much. It would be a delight to welcome you back. Kind regards, Julia and Eric, Le Gite du Pontreau
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

More beautiful than the pictures

Really nice big house. Old features combined with modern glass en high ceilings. Nice, big garden. And nice seating area outside. Bbq is neat. Pool is nice and warmed and enough seats around it. Had a lovely time here
Hospedou-se por 7 diárias em ago. de 2025
Resposta de VrboOwner em 13 de ago. de 2025
Thank you so much for your lovely review. We are so happy that you and all your group enjoyed your stay with us. We would love to welcome you back at some time in the future. Kind regards, Julia and Eric
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

Family holiday

Beautiful gite with plenty of room for everyone, indoor and outdoor. The pool was perfect for the children with a lockable gate to keep the youngest safe. Would have benefited from a bit more local information but otherwise a great family gathering.
Hospedou-se por 14 diárias em ago. de 2024
Resposta de VrboOwner em 19 de ago. de 2024
Hello Shirley, Thank you for your review and your lovely comments about the gite. I am sorry that you felt there wasn't sufficient local information provided. We forwarded you links to download or order brochures from our tourist board a year ago. There is a whole cupboard filled with tourist information and brochures. Details of all the local markets and shops are in the house book as well as those attractions closest to the gite. I am not sure what information was missing but we will take your comments on board. We would love to welcome you back some time in the future. Kind regards Julia and Eric
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

Great place in countryside

Beautiful place with a great swimming pool. The area is good for cycling, canoe and to enjoy the calm of countryside. Thank you for Julia and Eric that where always close for any help. Merci beaucoup !
Hospedou-se por 7 diárias em ago. de 2023
Resposta de VrboOwner em 6 de set. de 2023
Bonjour Camille, Merci beaucoup pour votre commentaire et nous sommes ravis que vous ayez apprécié votre séjour chez nous et le canoë-kayak à Vivonne. Cordialement Julia et Eric Le Gite du Pontreau
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio
Fantastic property. Clean and exceptionally well maintained.Pool is outstanding, easily the best private pool.ive ever experienced.. do not be put off by it being salt water, its barely noticeable. We loved it.The addition of La petite folie has taken the property to another level, especially if travelling with family. The grounds were all immaculate and well looked after. The perfect villa for a large family.
Hospedou-se por 7 diárias em ago. de 2025
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

Lovely break

Trouble with Wi-Fi but everything needed was there, well equipped
Hospedou-se por 7 diárias em jun. de 2022
Resposta de VrboOwner em 30 de jun. de 2022
Hello Alma, Thank you so much for your 5* review. Regarding your Wi-Fi problem, in fact we had no internet or telephone connection at all for the last few days of your stay due to damage to the telecommunications infrastructure. An engineer has fixed the problem today. I can only apologize again for the inconvenience but some things are simply outside of our control. I hope that everyone in your group arrived home safely. Kind regards Julia Le Gite du Pontreau
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio
The Gite was everything and more than expected. So well equipped, clean, spacious, amazing grounds and fabulous pool. My grandson has an allergic reaction to chlorine so he was in his element to be able to be in the saline pool with no ill effects. Julia was absolute lovely and so helpful. The beds comfy and so much room inside and outside. Highly recommend. There were three generations staying and we all absolutely loved the peace and quiet and a thorough relaxing holiday.
Hospedou-se por 7 diárias em jul. de 2025
Resposta de VrboOwner em 10 de ago. de 2025
Hello Gillian and thank you so much for your lovely review. We are delighted that you enjoyed the gite so much and would love to welcome you back at some time in the future. Kind regards, Julia and Eric
Avaliação arquivada

10/10 - Excelente

Fabulous pool and gardens

We were 3 families with 6 children aged from 2-10 years. The pool was fantastic, such a fabulous temperature and the baby pool at the end meant we could all be together in the pool and the very little ones were able to stay in as long as they liked. The grounds are extensive and we enjoyed a couple of great games of cricket and the children had plenty of room to run around. We also made the most of the outdoor bbq area. The only time we left was the daily commute for bread or shopping. The kitchen was well stocked with plates, glasses, utensils and we fell in love with the little lada and all its pots and pans. Overall we had a fantastic time in a fantastic location. Would definitely recommend.
Hospedou-se por 7 diárias em ago. de 2016
Resposta de VrboOwner em 23 de mar. de 2020
Hello Abbie, We are delighted that you enjoyed your holiday so much. You did have a very sunny week and the new pool solar panel worked perfectly. Glad that you liked the kitchen so much and yes I would love to have a larder in mine but unfortunately there is not enough space. We would love to welcome you back again to Le Pontreau so you could visit some of the attractions in the area that you missed! Kind regards Julia and Eric
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

Stunning gite in a peaceful location

We have just returned from 10 nights and have had such a lovely and relaxing holiday. We were a group of 4 couples/families with children aged 7-16yrs, and all had a great time. The gite is so well set up. Plenty of room and the bedrooms all spacious (each with their own shower rooms which was amazing!!) We didn’t spend much time in the living area, but it was all well set out and plenty of space. The outside area was great! A beautiful pool area with plenty of sun loungers and totally enclosed for the children. Lots of land to explore and a fantastic outside dining and lounge area with bbq (where we spent our evenings!) Julia and Eric are lovely hosts, on hand for any queries/requests, and they have created a lovely holiday home that we cannot recommend enough. Thank you! We did not want to leave!!
Hospedou-se por 10 diárias em ago. de 2022
Resposta de VrboOwner em 16 de ago. de 2022
Hello Beth and thank you so much for your wonderful comments. This review made our day! We would love to welcome you back. Kind regards Julia and Eric
Avaliação verificada

10/10 - Excelente

Amazing week

We had such a great week here. The Gite is very well equipped and has everything u need. Lots of space inside and is pretty impressive from the outside to look at too. My parents stayed in the little apartment Attached to it which was wheelchair accessible, perfect for them. We spent most of our week in the pool. What a fantastic pool, it is very well kept and lovely and clean. Lots of Water toys for the kids to play with and the little baby splash pool was fantastic, we couldn’t keep our baby girl out of it. The gardens are huge and so much space for everyone to play as had table tennis, basketball, swing and slides. We were two families plus our parents and we had plently of room for all of us. A very friendly couple who were more than happy to help where needed. Wish we could of stayed longer.
Hospedou-se por 7 diárias em jul. de 2018
Resposta de VrboOwner em 23 de mar. de 2020
Hello Leah and thank you so must for your lovely review. We are delighted that everyone enjoyed the holiday and particularly that your father could benefit from our new wheelchair accessible annex. We would love to welcome you back to Le Gite du Pontreau at some time in the future. Kind regards Julia and Eric
Avaliação arquivada

10/10 - Excelente

Tres bien Le Gite

We have stopped at the Gite now on 3 occasions and each time have thoroughly enjoyed it. This time we took another family and all had a brilliant holiday. It was an extremely relaxing week where we enjoyed the beautiful countryside. It is a perfect location for both walking and cycling. The Gite is beautiful inside and out, its extremely well equipped and has plenty of space. The owners Julia and Eric are very welcoming and on hand if there are any issues. They are always happy to help. They have also provided a wealth of information on the local area for reference. The pool is perfect for all the family to enjoy. There is also a barbeque and outdoor seating area where we spent a lovely sunny evening eating al fresco. I would highly recommend Le Pontreau, as would my friends. We will definately be going again!!
Resposta de VrboOwner em 23 de mar. de 2020
Hello Samantha, Thank you very much for taking the time to submit a review for us and we are very happy that you enjoyed your holiday with us. Please thank the boys on our behalf for sending the little video they had made of their holiday. It was very professionally made and the micro-lighting shots were excellent. They certainly looked as if they were having fun. We would love to welcome you back again. Kind regards Julia and Eric
Avaliação verificada

8/10 - Boa

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

Gite le Pontreau

A large well maintained Gite with plenty of room both inside and out for our family of 18 stay. Julia and Eric were immediately on hand to handle the one or two very minor issues that we had. The property is well stocked with all cooking equipment and ancillaries. The beds were firm which meant a good nights sleep for everyone. There isn’t any air conditioning and the bedrooms did get rather warm on a couple of nights. The pool was very good, big enough for all of us to be in there at the same time and our hosts cleaned it on a regular basis. There were also plenty of outside play equipment provided as well which we made use of. The property is in a tiny village but only about 15 minutes drive from the main roads.Overall we had a lovely stay at Le Pontreau and would recommend this Gite to other large family groups looking for a an authentic stay in France.
Hospedou-se por 7 diárias em ago. de 2023
Resposta de VrboOwner em 6 de set. de 2023
Hello Alastair, Thank you for taking the time to review your stay with us in such detail. We are delighted that you enjoyed your stay and that you have recommended us. We look forward to welcoming you back at some time in the future. Kind regards Julia and Eric Le Gite du Pontreau
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

A fabulous holiday with a group of friends and children

We had the most incredible time at the gite. A large group of friends and their children had a holiday together and we had a fabulous time! The swimming pool was perfect and really safely gated. There was a very secure gate which only adults could really open which gave an extra sense of security. The swimming pool was gorgeous. It was the perfect size for the whole party and there was also a smaller paddling pool which was perfect for little children who cannot swim. This would warm up in the sunshine which was such a treat for the little ones. The garden is beautiful and expensive and there is plenty of space for everyone to relax and enjoy their own thing. We really enjoyed the ping-pong table and the little playground. The location is very peaceful and beautiful and there’s a local river which had the possibility of canoeing and local horse stables as well. Julia was a wonderful host and she was so responsive. On a few occasions we needed her input and she was very patient with us and kind. Thank you for letting us stay in your beautiful home and for giving us a holiday that we will always remember. Eyes
Hospedou-se por 7 diárias em ago. de 2024
Resposta de VrboOwner em 18 de set. de 2024
Hello Dorothy, Thank you so much for your review and kind comments. We are so happy that you enjoyed your stay with us and would love to welcome you back at some time in the future Kind regards Julia and Eric Le Gîte du Pontreau
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio
Nous avons passé un excellent séjour dans ce gîte, en famille avec enfants. L’hôte est très accueillant, disponible et attentionné.Le gîte est parfaitement organisé, très propre et particulièrement adapté à l’accueil d’un grand groupe. Le vaste terrain permet à chacun de profiter pleinement de l’extérieur, et la piscine, avec son filet de volley, a été très appréciée par petits et grands.Un lieu idéal pour se retrouver en famille ou entre amis. Nous recommandons vivement !
Hospedou-se por 2 diárias em out. de 2026
Resposta de VrboOwner em 13 de out. de 2026
Merci infiniment pour votre retour si positif ! Nous sommes heureux que vous ayez passé un agréable moment chez nous. C'est pour des commentaires comme le vôtre que nous prenons tant de plaisir à accueillir nos voyageurs. Nous serions enchantés de vous revoir à l'occasion d'un prochain séjour. Avec nos meilleures pensées, Julia et Éric Le Gite du Pontreau
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio
Séjour très agréable au gîte du pontreau Gîte complet : jeux, vaisselle, lit confortable, propreté au rendez-vous. C'était parfait. Je recommande ce lieu paisible .
Hospedou-se por 2 diárias em set. de 2026
Resposta de VrboOwner em 28 de set. de 2026
Bonjour, Merci pour vos aimables commentaires ; ce serait un plaisir de vous accueillir à nouveau. Bien cordialement, Julia
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio
Tout était parfait, taille (nous étions 16), état, équipement très adapté, autant dans la cuisine qu'a la piscine et au jardin, et propriétaire très agréable.
Hospedou-se por 7 diárias em ago. de 2026
Resposta de VrboOwner em 25 de ago. de 2026
Merci d'avoir pris le temps de nous faire part de vos impressions sur votre séjour chez nous. Nous sommes ravis que vous et toute votre famille ayez apprécié votre séjour et nous serions ravis de vous accueillir à nouveau. Bien cordialement, Julia et Eric Le Gite du Pontreau
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio
La propriétaire est très gentille et réactive dans sa communication. Le logement est très bien équipé, les chambres sont confortables, la piscine au top.Merci pour ce superbe séjour ! Enfants et adultes ont passé un excellent moment
Hospedou-se por 3 diárias em mai. de 2026
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio
Gîte parfait pour passer de belles journéesIdéal pour les groupes. Nous étions 14 personnes, nous n'avons manquer de rien .7 chambres tout confort. Lits déjà faits à notre arrivée, cela est appréciable. La piscine est topBel accueil de notre Hôte, qui reste à disposition si besoin.N'hésitez pas à profiter de ce gîte calme et agréable.
Hospedou-se por 2 diárias em set. de 2025
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

Super sejour à la campagne

Maison tres bien equipee et entretenue, des hotes charmants, bref un sejour au top !Je recommande vivement.
Hospedou-se por 2 diárias em mai. de 2025
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

Superbe gîte dans un écrin de nature

Notre séjour s’est très bien passé, les propriétaires sont très à l’écoute et le gîte parfaitement propre et agencé. Idéal pour se retrouver entre amis.Merci !
Hospedou-se por 2 diárias em fev. de 2025
Resposta de VrboOwner em 9 de mar. de 2025
Bonjour Constance, Nous tenons à vous remercier pour votre excellente évaluation. Nous sommes ravis que vous ayez apprécié votre séjour parmi nous. Cordialement Julia
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação e precisão do anúncio

Gîte avec beaucoup de charme très bien équipé

Excellent gîte, très bien équipé, avec des propriétaires très gentils. Je recommande les yeux fermés, nous étions 18 et comme la pièce de vie est très agréable, c'était très bien.
Hospedou-se por 4 diárias em dez. de 2024
Resposta de VrboOwner em 8 de jan. de 2025
Bonjour, Nous vous remercions pour votre commentaire et nous sommes heureux d'apprendre que vous avez apprécié le gîte. Nous vous souhaitons le meilleur pour la nouvelle année et serions ravis de vous accueillir à nouveau en 2025. Cordialement Julia et Eric Le Gite du Pontreau
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

super gite

Super gote accueillant et Julia a été adorable avec nous.
Hospedou-se por 2 diárias em nov. de 2024
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

Bon séjour

Logement très agréable et spacieux
Hospedou-se por 2 diárias em out. de 2024
Resposta de VrboOwner em 15 de out. de 2024
Bonjour Séverine, Nous sommes ravis d'apprendre que votre séjour ait été un succès et nous vous remercions sincèrement d'avoir pris le temps de nous laisser un commentaire. Cordialement Julia et Eric Le Gite du Pontreau
Avaliação verificada

10/10 - Excelente

Pontos positivos: Limpeza, check-in, comunicação, localização e precisão do anúncio

Gite à louer en famille ou entre copains les yeux fermés

Très bons moments passés au gite et dans les alentours ; . A recommencer sans problème car le gite bénéficie de belles prestations ; chambres avec salle de bains privative, très grand espace cuisine avec ses accessoires, salle à manger très spacieuse... Endroit calme et reposant Très bons échanges avec notre hote Julia...
Hospedou-se por 3 diárias em mar. de 2024
Como podemos melhorar nosso site?Compartilhar opinião