We were in this appartment for 1 month, and it was great. Norbert is very nice and answers immediatly when you have a question or problem. The appartment was spacious and well equipped, the internet was speed amazing and it was very clean. Supermarkt/metro was 5 /10 minutes away. To go to Alexanderplatz (centre Berlin) was about 25 minutes with the U-bahn. I would recommend everyone to stay here!