Staying at Ralf's apartment was amazing. Since our train happened to have a 3 hour delay, he even picked us up at the central station at 2 AM. The apartment is in a quiet residential area, which is nice after a day of sightseeing or a long night. However, the subway is a couple minutes walk to whiz you wherever you want to go around town. The apartment includes a kitchenette, shower and small bathroom - everything is very well chosen and nicely done. The apartment and Ralf's helpfulness and welcoming nature made it a unique visit!