The place is at a very nice and quiet location. It's right next to the tram station as well as a few mins walk from a U-Bahn station. Also it's just two station away from the central area Alexanderplatz so it's very convenient.
The room itself is spacious, clean and very well decorated. The kitchen, toilet / shower room are also well equipped with lots of amenities.
The host Lucas is very nice and explained everything in detail before our arrival, so the check-in process was smooth without any problem. Our train arriving Berlin was a bit early, but Lucas even let us check-in earlier so that we didn't need to take our luggages around to look for lockers. He has also prepared a detailed note with a lot of information about the neighborhood that helps a lot.
It's really a nice experience and I highly recommend other travelers (especially female) to stay at this place.