Me and my friend spent 1 week at Diane's place. Unfortunately she wasn't there so we couldn't meet her in person, but her flatmate did everything that was necessary to welcome us. Cozy and spacious room. Location is great: in the Mitte, close to public transport (less than 10 min walking from Hackescher market S-Bahn), many small local and international restaurant around the area. Good value for money. I would definitely recommend Diane's place.