This apartment is in a bad neighbourhood. We returned from our first night out and someone attempted to pick pocket me. We were too worried about staying that we packed up our stuff and went to a hotel.
To be fair, we have received all our money back and the host has communicated with us well. The apartment is newly done up and clean but is in the basement of a block with no natural light.
My advice to the host would be to highlight to guests that the area is dangerous at night and people can make an educated decision whether to accept this risk for paying a lower price.