We stayed in the upper tower in 3 adults and one kid. It's very convenient if you travel in a group and would like to cook or heat your own food.
Fully accessories kitchen, two large bedrooms, with comfortable beds (a massive double bed in one bedroom, three large single beds in the other one), large wardrobes and drawers where you can easily fit all your clothes and belongings.
The cherry on top is the living room on the top floor and stunning views of the lake.
The only discomfort is that the first night when we arrived there was no water supply and we could not take a shower and had to flush the toilet with bottle water provided by the house