Set back from the main road, at night if you look hard enough you will spot a orange glowing thing mysteriously sliding to the sky - Solar - a bar/restaurant with fantastic views with floor-to-ceiling windows on three sides. Relaxed atmosphere, but a bit pricey (don't buy spirits/mixers, stick to beer if you're on a budget, though cocktails are good). Choice of comfy leather seating in various layouts so good for large or small groups, and there's a swing large enough for multiple people!
www.solarberlin.com
Stresemanstrasse 76, 10963, Berlin
+49(0)1637652700
Google map: bit.ly/YDo0bU