We didn't get to meet Oliver personally but he was incredibly responsive to all my messages. Our flight was delayed which forced us to miss our connection flight (Don't fly Norwegian) and I hopped on to message Oliver that we wouldn't be in Berlin until much later. The cafe where the keys were to be picked up would be closed so Ines (Oliver's friend there) dropped them off at a cafe in the same building which made everything so much more convenient when we finally arrived in Berlin 7 hours later. The apartment is exactly as it appears, the residents are very friendly. The restaurant directly across the street is awesome for German food, the entire area surrounding the apartment is filled with great night life and a variety of food choices. My boyfriend had artwork in a gallery There was a flea market in the park across during the weekend which was also cool. Closest to the U5 which you can take 5 stops to Alexanderplatz and basically go anywhere. Near trams, buses, everything. Our stay was perfect and will be our first pick if we come to Berlin again.