Berlin: where to train outside?
I'm kinda new to Berlin and looking for a nice spot to do my outdoor training swims when the temperature goes up again. There are a lot of lakes around Berlin, but I'm stuck with public transport and don't want to travel for hours to go swim for 1 or 2 hours.
So: does anybody know where to go swimming where there are possibly more people swimming (training)?
I have been watching at the Plötzensee, does anybody have any experience at that place?