At the beginning everything seemed to be fine. The host was quick im answering and even prepared the flat a little earlier so that we could check in and store our luggage earlier. However, when we arrived late at night, we found a hugh cockroach in the kitchen. As there was a sign on the main entrance door that the whole building used to have a problem with cockroaches and therefore has been disinfected, we decided to leave. The next day (as we left at 1 am in the morning) I agreed with the host on how and when to return the keys. After I returned the keys I asked her to cancel at least the upcoming nights, so that we get a part of our money back. Somehow she stopped answering from tha moment on. Even Air BnB tried to contact her and they also didn't receive any answers anymore. We were really hoping to find a fair solution for everyone. However, a host who is not replying anymore as soon as problems arise, is not acceptable.
Moreover, that location of the flat is close to a no-go area. So if you decide to stay there, consider taking a taxi in the night, especially if you are staying alone.