I stayed around 3 weeks and felt totally at home at Bernd and Katja's apartment, the fotos are just like the advertisement. The kitchen is very well equipped (I cooked everyday) and in the apartment there are Berlin guides as well. Katja and Bernd gave me maps and directions that I needed and left also printed for me at the apartment. We managed to meet personally and they were very nice and kind. They provided me with everything I needed. The heating system of the apartment can sometimes be a bit noisy and as I am a light sleeper I had to use my ears protectors. The apartment is very well located near public transportation spots and the neighborhood is nice and alive. I enjoyed very much staying there and definitively recommend. :) Ps. Tks also to Marcel who very kindly helped me with my bags when I arrived.