Here's a few things that could be improved, but I would like to stress that overall the hotel is amazing.
1. The elevators are a total disaster. Thankfully each chalet has only 2 floors, so you only need them if you have a stroller, wheelchair, luggage etc. Waiting time between 0 and 10 minutes.
2. The restaurant opening times are really limited. If you are going less than 45 minutes before the kitchen closes, you're out of luck.
3. Just to set the expectations right: this place is for self-caterers. You rent your apartment, and then you're on your own. There won't be a maid to make your beds daily, no breakfast included (you can pay for one, but the selection is really really small), and the restaurants are likely to be closed unless you happen to be hungry precisely between 12pm and 1pm and 6pm and 8:30pm.
The generous space in the apartments.
The impeccable cleanliness.
The location (close to the chairlift).
Good soundproofing. Nothing to disturb the sleep.
The excellent food served in the restaurant. I have no idea why other raters said the food wasn't good. I am one of the pickiest eaters on this planet, and I really think that despite the limited menu, the food is simply tasty.
Ideal for families with children: children swimming pool, play-room, playground, daily activities for children, daycare, they even provided a high-chair in the apartment.