I lived two months in the apartment so I can mention a few things:
The apartment is in a quiet, beautiful neighborhood close to the subway, tram, and Train stations. Therefore, you can get very quickly to different parts of the city. In addition, several of my favorite parks are very close (Humbolthein Park, for example). In front is the mall, which has various supermarkets and stores. It even has testing and vaccination centers!
The apartment is comfortable. For two people, it is more than satisfactory.
Jan always responded quickly and kindly to my queries. The problems that arose had an almost immediate solution.