I would like to say that Alexander's place is astonishingly equipped with everything needed for a short or longer stay. The appartment is decorated with artistic flavour and all possible details for the stay are thought of. It is very quiet and makes for a great night sleep. Location is right next to the S-bahn and is equally close to the center of Berlin and the airport. Alexander was easy to communicate, though it was almost not needed, as he had prepared very detailed information for the appartment and even general tips for Berlin. One of the bedrooms has a private bathroom, so 4 people can be acommodated easily. Highly recommend it.