We really enjoyed our stay at Theo's apartment in Rougemont.
The place is located about 10-15min from the center of Gstaad, and about 10min from Château-d'Œx, that offers some cultural activities, also for kids. Our daughter had a blast sliding at the 'Jardin des neiges'.
The cable car for La Videmanette with a quite large skiable domain (taking you also to ski in Gstaad) is just 5 mins by car from the flat. It's also reachable by a free shuttle ski bus from Theo's place.
The apartment is nice and offers what you need for your stay at the mountains, the living room is spacious, the kitchen appliances are quite complete, the heating works very well, and is quite sunny during the day. The place is very charming with a beautiful view!
Theo mentioned he will be improving the apartment and we are looking forward to coming back and discovering the changes, as we are sure it will look amazing.
Communicating with Theo was easy, he is very accessible and seems to be a very nice guy, even if we haven't met personally :)