I only interacted with Katharina's son Michael since I do not speak any German. However, Michael was an excellent host. He was friendly and gave plenty of help with everything from traveling from the airport to where to buy groceries.

The place itself is perfect. It is immaculately clean, completely furnished, has a fully-stocked kitchen, and even has a balcony. The space is also quite large and you will definitely be comfortable inside. At night the neighborhood is quiet and peaceful as well. There is also wireless internet and a coin-operated washer and dryer which is shared by the building. I can't really think of anything negative to say here.

The location is also excellent. It is within easy walking distance of everything in the central ring of the city. You will likely not need to use the public transportation at all unless you are venturing out of the city center (for example to hit a beer garden).

Overall, the place is a bit expensive but you are getting a large, clean, quiet space that is perfectly located. We really enjoyed our stay here and would definitely stay again.