I stayed at Christian's place for one month, it was the best possible place to "land" in Berlin. Both are very friendly and kind, always did their best to make me feel comfortable and at home. The place itself is modern, and clean, its a pleasure sitting on the balcony and drinking a coffee. The area is calm and safe, well connected to get to for example Hackescher Markt. I really enjoyed my stay and I would recommend this place to anyone! Thank you!