This apartment was exactly what we needed for attending a wedding in Berlin. As noted by some other reviewers, the neighborhood can appear rough, especially near and in the large park nearby. However, the apartment was convenient, clean, safe and excellent value.
We used mostly public transit to get to/from the airport and to get around the city. The bus line we used most was a 4 minute walk from the apartment and about 5 minute ride from the nearest metro station. These provided convenient access to much of the metro area. We also used Uber twice when we were transporting wedding presents.
People in the office were always very helpful. This is a very reasonable alternative to a hotel.
We had a few hot days during our stay so we were grateful for the fan provided in our room. There was no air conditioning.