I am Dutch and living in Porkun about 250 meters from the lake. In summer time I swim and sail at the lake.
You only can sail with a movable sword, because there are a lot of plants in the undeep parts.
One other problem is the fact, that the lake is sometimes totally empty. Once in the 5 to 10 years.
The lake is very quired and you are not allowed to have a motor boat in the water.
All kind of birds and animals are living in the area.
Beavers are sometimes damaging the trees totally.
It is never crowded and the water is cristal clear.