The apartment is extremely well situated. It's both on the edge of the pedestrianized centre of Chamonix, and also almost 'ski-in/ski-out', in that you can walk across the road and pick up a ski lift that'll get you up to Chamonix's Brevent and Flegere ski areas. So you get the best of both worlds.
The parking across the road is easy and convenient, as is the supermarket about 100 metres' walk from the apartment.
Any downsides? Le Paradis 18 sleeps 8 and has two bathrooms, but only one toilet. You just have to prioritize the loo queues well!
The team at Chamonix All Year were absolutely fantastic, from beginning to end. And just really fun to work with. Can't recommend them enough.