I can't recommend Avoriaz or Avoriaz Chalet's highly enough! The resort is everything we could have wanted in a family ski vacation. Absolutely ideal for our 8 and 13 year-olds. The terrain was well suited to their abilities (intermediate) and the village was great for them. They were able to go off sledding and to the bakery on their own for a bit. There is also easily accessed terrain to satisfy all but the most extreme of skiers.
The folks from Avoriaz Chalets were exceptional in welcoming us, checking in that everything was satisfactory, addressing the few minor issues we had, and seeing us off at the end of the trip.
If you stay at this spot, be sure to get a transport from the car park - the little push sleds don't work all that well. One of the guys from Avoriaz that met us went way above and beyond by helping me push the sled with all our baggage all the way to the chalet! Cheers!
It is possible to ski out from this property, but getting back...