Frank's place was highly recommnded to me and after a 10 day stay, I would highly recommend it to anyone. Staying at this place is an experience in itself - the room, the whole house, Frank, the location! It's perfect place not only to explore but experience Berlin. I really enjoyed the bar two shops away, which is open 24 hours and friendly doormans and interesting local people to meet. I will go back to Berlin and I would stay at Frank's place again