This flat is in an awesome location. We were able to walk to most all the city sights, including the Christmas market. It has a comfortable bed, hot shower, and clean small kitchen.
We had an issue with our key and a broken lock. Volker doesn't seem to be on the property so we were left on our own figuring out what to do. Luckily another resident was able to call the maintenance manager and get the lock fixed. It was a stressful situation as we couldn't leave the flat, and there is no WiFi so communicating with Volker was very difficult.
As other people have said, the noise from the street is quite noticeable. We had the windows shut, yet it woke me up a few times. So if you're a light sleeper it could be a problem.