We just returned from a wonderful week in this property. The flat itself is spacious, and well equipped - with every bedroom being a proper bedroom (no bed in a cupboard / behind a curtain issues!). 4 good sized bedrooms, 2 toilets, 3 bath or shower-rooms, a ski locker, nice big living-dining area and kitchen. The owner was very helpful and responsive throughout.
The building is right on the slopes, and easy enough to ski back to, or get the new Dahu lift if travelling by foot from 1800 town if you don't fancy the uphill walk (the lift runs until 11 p.m.).
One thing to note is that the cost of hiring linen and a cot (through a local company, not the owner) was very expensive indeed, and we felt was poor quality (one tiny thin towel cost 8 Euro, a 15-year old 80's duvet cover and sheet for 22 Euro per person). And if you want a sheet / blanket for a cot - that's another 30 Euro on top of the existing 35 Euro to hire a very tired old travel cot. If we went again, we'd pay for an extra bag on the plane and take our own. The apartment itself has a great assortment of duvets (doubles and singles) and plenty of pillows though. Note - this is nothing to do with the apartment itself - that was great!