We had a wonderful stay at Katrin's apartment. The room is as beautiful as it looks and with 4 adults still comfortable. We absolutely loved it, as it was just 8 min by walk away from the ester Congress Hotel where was our annual congress. Communication was easy and she was helpful and accommodating. There is a cute cafe down the street next to the S-Bahn station Sonnenallee for a lovely morning breakfast, and access to public transport stops just a couple of min away. We would highly recommend it. Only small minus: a main road is just running in front of the apartment and it can be quite noisy after 7am during working days, but it was quite over the weekend.