Serre-Chevalier 1400 is a bit of a mishmash of pretty, old hamlets and HLM-style apartment blocks, with no one "centre" as such. That's not to say that it doesn't have a nice unpretentious atmosphere, plus heaps of really lovely skiing.
The Mont-Thabor is in a very handy spot, a short walk (2 mins. at most) from the Aravet lift base (ski rental, lift pass office, ski school meeting point) and also just across the river from the rue de la Guisane in the old village of Villeneuve, where the bulk of the restaurants are to be found, plus a handful of nice bars. If you're arriving by car, take the "private parking" with a pinch of salt; what they really mean is that you can leave you car in the open public area nearby.
Although the hotel is on the main road through the resort, noise wasn't a problem. You have a handy back entrance from the first floor, giving you a quick walking route via pretty back lanes to the Aravet gondola and Mickey draglift (useful for gaining height and gliding over to Casse du Boeuf chairlift and Frejus gondola).
Arriving for a long weekend in low season, we were happy to be able to check in immediately at around 12 noon. The staff were very friendly and ready with advice, at least in French. There were no anglophone guests so no idea how multilingual they are.
Double room facing away from the road was very quite and well insulated and had a good view of the sun rising over the mountains in the morning. Huge and comfortable bed and plenty of storage, including a safe. A proper shower fitting in the bathroom might have been good.
Free access to the sauna, hammam and jacuzzi from 4-8pm. The sauna was very welcome and just the right temperature after a day of sub-zero temperatures on the slopes.
Plenty of choice at breakfast, including good fresh bread and pastries, all served in the open lobby area. This is the only part of the hotel where the free wifi is available, which seems a bit stingy.
Wanting to get out and explore a bit, we didn't try the restaurant out, although the menu sounded perfectly OK. No idea if the bar/club was working but it was a low-season week and the whole village was pretty quiet.
In conclusion, definitely worth staying here. In the real world, 150 euros a night for what you get here would seem a bit steep but ski resorts are not the real world and it's certainly a comfortable, convenient option.