Our stay at Wolfgang's apartment was perfect. Close to the ubahn station so easy to get anywhere in Berlin and only a few short stops to the centre of the city. Comfy spacious room, it has a double bed underneath a big bunk on top. Full use of his apartment facilities also. Although Wolfgang was not in town during our stay, his friendly and polite house mates Peter and Steffi helped us with anything we needed and were very friendly and accommodating, whilst allowing us to have privacy in their own home. Perfect place to stay if you want to be close to tourists attractions and Berlin central station, with all you'll need around you. Highly recommend and will stay again when in Berlin next for sure.
Chris & Ricki, Australia.