I stayed 4 nights at Katrin's place. It is very well located. I came to Berlin to watch films at the Berilnale, and Katrin's place was easy to get all the venues. My room was the last room inside the house, which was small but cozy and quiet. I slept very well. We need to use shared bathrooms but one is just next to my room and it was almost like a private one. Katrin was very friendly and kind. Thanks!