The flat is as described. We were received by a very helpful, kind and friendly colleague of Alan and Kasia as Alan was not able to meet us due to him being sick. However, a few days later we had the doubtful pleasure of meeting Alan. We were unable to leave the flat as we could not unlock the door. We called Alan who appeared extremely annoyed both on the phone and in person. Apparently we somehow managed to not close the door properly, of course by mistake, but Alan acted unforgiving, rude and generally unfriendly with absolutely no sign of understanding. He left without even saying goodbye - just as he just hung up on the phone when we first called him. This is in my perception totally unacceptable and nowhere near what could be expected from a host on air bnb. For that reason we cannot recommend this host. There is a multitude of great Berlin accommodation options available. Do yourself a favour and find a host that actually likes having guests.