There were three of us staying in Anna and Frank's apartment. We only stayed one night, but really enjoyed our time there! The apartment is very well designed and felt surprisingly big and spacious. We loved the huge bathroom, fully equipped kitchen and large windows. The apartment is in a great location near grocery stores, shops and restaurants and walking distance to public transportation. Anna and Frank gave us great check-in and check-out instructions and made sure we had everything we needed for our stay. We'd definitely recommend the apartment to anyone visiting Berlin :)