These comments are from my parents-in-law who stayed at the apartment:
These are a few comments about our long-term stay (7 weeks) in Berlin at Löwestraße 23, 10249. Our stay was pleasant and safe. The neighborhood was in a location where we could reach any store according to our needs. It was a quiet neighborhood. There were several restaurants open 7 days a week.
In order to appeal to international visitors, the apartment should have a microwave. We tried to use the hair dryer and noticed that the outlet in the bathroom does not work and also the two outlets by the washer did not work either. The faucets in the kitchen are very hard to close both hot and cold water. The vacuum cleaner did not work upon arrival but a new one was provided which we really appreciated.
Final comment: There was never any contact with the actual owner. All communication incl. check-in and discussing any issues were done with a service company. The team was always available and very helpful. For instance, the evening before departure we locked ourselves out of the apartment, but Mr. Prengemann came to the rescue with a spare key. Even though it was a Friday evening and he had another meeting to go to, he came as quickly as possible and was friendly and supportive.