We stayed for a week in mid March just after the end of ski season.
The resort was lovely (especially the Spa area) and the surroundings around Lake Schliersee were stunning. We felt that the on site restaurant did not really live up to the rest of the resort -the food was ok but unimaginative and expensive -this did not really matter much as there are several very good local restaurants within a few minutes of the resort.
Our onsite resort representative (Andy) was excellent -very helpful with local tips.
We would thoroughly recommend the resort to anyone thinking of visiting the area.