They requested to stay in the apartment until 17h, as they had to pack their stuff. This should have been a first warning sign, but I accepted.
When I finally moved in,the apartment was extremely dirty. They even hadn't emptied the thrash bin in the kitchen and, what's even worse, the thrash bin in the bathroom, which was full of used toilet paper!
Other than that, the apartment is very old and had a strong smell. It was also extremely noisy, couldn't sleep at all.
Really disgusting experience and luckily Airbnb agreed to a full refund and I could leave after the first night