We stayed in Alexander's flat for four nights. It's part of an extensive renovation of an old hospital. The site consists of a series of buildings and Alexander's is a ground floor flat in a three story building. It has been tastefully converted/modernised and has a mezzanine floor where the (large) bed, wardrobe etc are located. It fronts onto a very quiet street in the district of Kreuzberg and there is almost no internal noise from the other flats in the building. Within a 5/10 minute walk are a series of good restaurants, cafes and bars. The U bahn is a 10 minute walk away (at Kottbusser Tor) and the 41 bus is just around the corner. This is a great flat in a great part of town to hang out in. I recommend it very highly.