I spent one month in Sandra’s apartment and I can only recommend it. The location is great. It‘s next to the U-Bahn station and only a 2 min walk to the Tram/Bus station. There are two supermarkets near the apartment. Both of them are only 5 min away. The apartment is perfect for one or two guests. It‘s equipped with everything that is necessary.
The communication with Sandra was good. Because I was there for study, Sandra provided me a form so that I didn‘t have to pay the Berlin City Tax.