I had a good experience staying at Heval's place. It was clean, modernly designed, well furnished, in a good neighborhood in front of a big green park, and very spacious which makes it convenient for a big group or family as we were. The apartment is very close to Tempelhof station which makes it very easy to get to anywhere in the city. It's even closer to Aldi, a very cheap german supermarket and a number of nice restaurants around the Tempelhof station.
When we arrived, Heval accommodated our need to checkin 2 hours before the normal checkin time. We were introduced by Heval to someone who met with us at the apartment and gave us the keys. He was very welcoming, showed us all directions to the underground station, shopping center, nearby restaurants and provided all the details we needed to know.
Heval was also accessible via phone, airbnb messaging and whatsapp. In 2 cases during my stay I had to contact him and he responded in a reasonable time. Even before we arrived he sent me all the directions and tips that he felt I may need upon my arrival to Berlin. He also recommended us a restaurant (Trattoria Toscana), just a short walk from his apartment. It was a great recommendation for our first lunch. Good food, good ambiance, funny waiter and more importantly very near which we enjoyed specially because after a long flight, we needed food in a near distance.
Overall, my family and I all enjoyed the experience of staying in this place.