The Auberge is open year round, when we were there it was deserted and the staff were more concentrated with their cafe across the road, which was not an issue at all.
The rooms were warm and spacious, the water was hot and the view from the terrace was fantastic. The dinner entertainment was, without doubt, the best in the known universe.
You should probably book ahead if you can though as it can be fully booked easily as they make their money from tour groups coming through.