I strongly recommend this studio. Petra, Rene’s agent in Berlin, is extremely helpful and will go out of her way to make your stay as great as possible. The studio is fairly big and bright, very clean, with a complete kitchen and bathroom. The building and street are quiets, yet the many stores, bars and restaurants of lively Kreuzberg are within 5-15 min (for a cheap place, check out Huhnerhaus where you can have half a roasted chicken and salad or fries for about 5 euros). Not far from two U stations (Görlitzer might be the most convenient), and bus 265 just down the street will take you all the way to Spittelmarkt from where you can walk to museum island or link to other directions. I would definitely rent this place again when I go back to Berlin.