Berlin, BE
Do There are four beaches. Clothing is optional and it's all mixed--no special nudist beach or anything. There's no cafe, but you have vendors coming by with drinks and snacks.

Tummelplatz beach is favored by the beer-drinkers, hippies, and dog owners. It's not very kid-friendly.

Take the U6 to Otisstraße then it's a 15-minute walk to the lake.

Man fährt mit der U6 bis Otisstraße. Von da aus sind es zu Fuß gute 15 Minuten zum See. In der Seidelstraße gibt es auch reichlich Parkplätze.