Heinz apartment was perfect for our stay in Berlin! We can recommend the apartment 100 %. The apartment was clean and spacious and in a quiet area. It was easy to get to the apartment from the airport (Tegel), and just minutes from the S-bahn. It was also several nice restaurants, galleries and shops nearby. We did not meet Heinz in person, but the communication was good, Heinz was really friendly, and gave us tips for our stay in Berlin. We would definitely go back.