Badeschiff

Badeschiff is another really great place in Berlin that I recently discovered. Badeschiff, which translates to bathing ship, is a floating pool in the river Spree. It's slightly hidden between several old abandoned factories and opens up to a beach bar with a great boardwalk-looking platform with lawn chairs and the pool on the river.
There are parties and events almost every night, or even yoga classes during the day! It's definitely a refreshing area with a great view of the Molecule Men and the Oberbaum Bridge. You work a 9-5 job? Well that's fine! It's open from 8am to midnight every day, so you can enjoy the sunset on the river!

I went there at the begining of the month on a very hot day in Berlin and though the water was a little cold, it was a lot of fun! It's only 5 euros for a day pass, so make sure you head out there!