The 3 of us spent 4 night in the hotel in a "large double room". We had a double bed and an extendable armchair, which was reasonable for our son. The room was indeed big enough and had two balconies, next to each other. One very small, but the other one was just great, with a direct lake view, shadow, table and chairs (1st floor).
The other great thing about the hotel was its park. Not big, but great for a short promenade, or for a lake-side coffee when the weather permits.
Also a gym, and even a table tennis room in the basement.
Easily accessible by car, plenty of parking.
Unless the breakfast, which was modest than expected for such a place, it could be a perfect place to spend a week.