We were very happy staying in Gisella's apartment, which is only a short walk to both the train station and groceries. It is also possible to walk right into the city if you aren't in a hurry. Gisella & Jens were very kind to us, especially since we arrived far later in the night than we had originally planned, and Jens was still willing to meet us and introduce us to the apartment. Overall a wonderful stay, very comfortable beds. We would definitely return to this apartment if we were ever again in Berlin.