2nd time staying at one of Martin's flats. These are in one of the best locations if you want to experience the real Berlin (close to tempelhofer feld & all the nice cafes/restaurants/markets in Kreuzberg/Bergmannkeiz and the canal). I stayed for 10 days, WIFI was perfect for remote work, the flat was really comfortable and well connected to the u-bahn's and cycle routes. Always my first choice if visiting friends in Berlin