We really enjoyed our stay in the Prenzlauer apartment. It is a short 4-minute walk to the S-Bahn and the tram, which means you can get anywhere in the city without a car or Uber. Also within a few minutes' walk are two grocery stores, many cafes and restaurants, and the historic Gethsemane church, which during our visit was one of the historic sites that was celebrating the 30th anniversary of the fall of the Berlin Wall. It was a memorable treat to be in the city for that celebration.
The apartment is on the ground floor with a door that opens directly on to the street. This means it is would be much easier for anyone with mobility issues, I think, than other flats in the city that are on higher floors and have no elevator. There is one step up into this apartment, and then everything is on one level.
Michele and his father were outstanding communicators throughout the whole process, with very quick responses to any questions.