Our group of 5 had an enjoyable stay at Olivers apartment. The place itself was beautifully presented and spacious thanks to the high ceilings, large windows and skylights. The layout and segregation of the rooms gave everyone their privacy and the rooms/beds were very comfortable. The apartment is in a fantastic location close to the S + U bahn as well as the trams making it super easy to get around. Nearby are also all the shops, cafes, restaurants, bars and nightlife which we really enjoyed and appreciated. Communication throughout was also really good. Though not explicitly called out, there is an outdoor deck area that is not available for use by guests. While not a deal breaker, it wouldve been an extra nice touch for our stay.
There were some minor things like missing amenities we had to request or flag to the host but otherwise would definitely recommend staying here if you're visiting Berlin!