We had an amazing stay in Berlin in Matthias' apartment. The location was a great starting point for our adventures in Berlin. The apartment was very clean and exceeded all our expectations in size and coziness. We were warmly welcomed and had a tour of the place - and everything was described perfectly also on little notes. Thank you for having us, and thankf you for the great and easy communication beforehand and during our stay. By the way, we did go to the Flohmarkt am Mauerpark and had a great time there! Thanks for the hint. :-)