I recently discovered a new cocktail bar in Mitte, along the Spree, close to S+U Friedrichstraße: Meisterschueler.
I went there with some friends for an after opera cocktail, it was warm and we could enjoy the lovely terrasse along the river. The staff is super friendly and the menu HUGE, really hard to choose from, but the waiter was patient and came a few times before we could decide. I wanted a pisco sour but without eggwhite on top and they just did it, and it was great. Not too strong, no too weak, the right dose, very refreshing. Everyone was happy with their drinks and they also have a selection without alcohol.
The inside is very nicely decorated, although it’s a bit expensive, it can really be worth it once in a while.