Everything was great at Martin's place. He even made sure the flat was stocked with enough sugar and milk to last our entire stay (along with the coffee he also supplied). Martin was a big help showing us the place and how it all worked. His food recommendations were good and cheap and he even walked us partway. The apartment is in a great location-about 5 minutes walk to the subway and 10 minutes to Potsdam Plats and other tourist sights. Nice beds and great facilities. We loved it.