adaptTo() 2015 will take place in the Kulturbrauerei. Entrance is at "Palais Kulturbrauerei".
Kulturbrauerei, Schönhauser Allee 36, 10435 Berlin
You can read about its history on Wikipedia Page.
Pictures from the venue in action.
Finding the entrance
The easiest way is to start at "U Eberswalder Str." and walk Schönhauser Allee south on the left side. Past the Rewe Supermarket take the stairs to your left (between two buildings). When entering the inner yard you can see the "Palais" on the left side. The entrance is at the corner of this building.
A map describing this route can be found here.