The
lake is quite busy. Ship after ship and sometimes you have to swim
through a lot of waves. But the water is clean and it's rather
peaceful. No dogs, not too many people. There are about ten little
beaches and there's a good chance to find one to be alone.
How to get there:
Although
there is an S-Bahn station called Griebnitzsee, don't go there. It's on
the wrong side of the lake, the one without beaches. You have to go
Nikolskoer Weg with bus 316, which you can get at S-Bahn station
Wannsee (S1/S7).