We found Joachim's apartment to be well situated between the middle of Berlin and Potsdam, with ready access to both S-Bahn and U-Bahn stations. The ground-floor apartment was clean and airy with high ceilings and white walls giving a feeling of spaciousness, and it was on a quieter side street so the traffic noise wasn't a worry. We thorougly enjoyed our stay in the area with so many shops being available within a five-minue walk. Thanks for a great Berlin experience, Joachim!