Frank's place was perfect for our 4 day stay in Berlin. Frank is a very friendly and welcoming host.
Our room was spotlessly clean and bathroom too. The house is what I would describe as "totally Berlin" (kitsch, avant-garde)
The area and convenience of his location could not be better. This is the place to stay if you want to be in the heart of everything that Berlin has to offer culturally / historically.
All in all, our experience was memorable for all the right reasons.!