Christoph's apartment in Berlin was in an ideal location and was so spacious, comfortable, and beautiful. You travel to the 5th floor by elevator and then walk up a flight of stairs so that you are in the rooftop apartment with views of Berlin in many directions, The apartment has a wonderful feel to it and you have to tear yourself away each day to go and sight see. We arrived by train and left by metro to the airport and found it to be ideally situated to use public transport. If we are ever back in Berlin I would be disappointed not to stay there again!