We spent 4 days in March. First, Ron the owner, is a pleasure to work with. Everything was as described, and we had all the right information well in advance of our arrival. The Sebastian is beautiful and the staff does a great job. If you go during ski season, the base camp is great. The concierge will take your gear when you arrive and it's waiting for you every morning, with boots heated! They even gave us a ride down to base camp on our first morning to show us where everything was located.
The suite is very spacious, with 3 bedrooms, each with an en suite. We didn't cook much, but the kitchen is well appointed.
We took advantage of the hotubs after skiing one afternoon, there are 3 available, and there is waiter service for drinks.
The only minor issue was one of the elevators was out of service, so there was a little time waiting to get up and down from our room. I will give The Sebastian credit, each afternoon they had a chacuterie board at the elevator due to the delays.
All in all, a great stay and we would definitely recommend Ron and this residence.