I was extremely happy with my stay at the "concrete cabin in the sky." It was spacious enough that I felt comfortable spending an entire month there without feeling cramped, and the views of Berlin truly are unique and breathtaking. What I wasn't aware of is that it is in the tallest residential building in Berlin, so you really get to see many kilometers into the distance. Also, the location could not be better as there is quick access to trains, busses, and subways, so you can easily travel to any part of the city you like.