We had a lovely stay at Andre's flat. It's a great location -- very near the U-Bahn but quiet. Communication was very good. We met Anja who showed us how to work things in the flat, and answered our questions (e.g. recycling, nearest shops, etc.) and gave directions and suggestions about the area. Our boys loved the "secret room" with the tea cup lamp. We hope to stay again when we next visit Berlin.