Let me start by saying that whatever you do, book the largest room available but NEVER the room for 4 which is too small for humans.
The room occupancy is calculated based on the usage of the most basic of sofabeds and trust me, you want a proper bed. So if there is 4 of you then book for 6 or as I said - as large as possible.
The flat we stayed in was basic but clean and functional.
The bathroom was super and the bedrooms as well.
The kitchen/living area is quite small and the balcony was to small for 3 even though we stayed in a flat for 6.
The complex has an excellent pool which is very popular with guests.
The reception is not always manned by when it is, we found the staff super nice and helpful.
Please note that you have to clean after yourself before you check out.
Our first impression when we arrived was not great but La Feclaz really grew on us while we were there and we were somewhat sad to leave.
La Feclaz has a several fairly basic, reasonably priced but ok restaurants but don't expect gastronomy.
The village does however have a truly excellent little supermarket with all you need again at reasonable prices. Attaced to the supermarket is a laundrette which is the only place you can wash clothes.
In terms of things to do, as a family we highly recommend the very well signed local hiking paths which are great for families as well as seasoned hikers.
Cyclists are also in for a treat as the climb from Chambery to La Feclaz is 1100m and steep.