There are some problems in the apartment which were not aware about beforehand since the pictures and reviews were more than positive.
First of all, the self check in went fine. We found the key quite easily. But the doorlock was broken, therefore we were not able to lock the door when we left the apartment. Besides that the overall condition of the apartment is not like we expected it to be. On the house rules it was clearly mentioned that smoking is prohibited but the entire apartment smells intensively of smoke. Besides that the cleanliness was terrible. The floor in the shower was not clean which forced us to buy cleaning supply and clean it ourselves. But the worst part was that there was a lot of mold on the bathroom ceiling and around the water heater. Additionally the light in the shower did not work.
We informed the owner as soon as possible but did not get any responses until the end of our vacation when he asked us when we are going to check out. Due to the unacceptable health condition we already moved out days before. We do not recommend anyone to stay there.