Just off to the side of Kottbusser Tor bahnhof is Südblock. This cafe/bar/venue is quite the addition to a bustling Kreuzberg, catering to the local community as well as the LBGT community for greater Berlin. The calendar is stocked with great events, certainly a worth while trip at anytime.
Keep an eye out for events that Digital in Berlin is presenting at Südblock.

Südblock | Admiralstrasse 1-2 | 10999 Berlin/Kreuzberg

südblock.org | Map | Facebook | Südblock @ D/B