Jens was exceptionally responsive and reliable in his communications. Due to a personal incident I considered leaving early, which would have been possible with a partial refund. I ended up staying, however, and had a great stay. The Flat is very comfy, clean, modern and well situated; no excessive street noise as it is located on a quiet street -big plus in my opinion. Especially in big cities like Berlin. Late check out had been made possible as well without any complications. I would definitely recommend to stay at this place. Thanks again, Jens!