The apartment had black mold which is a major health hazard. Additionally, the rooms were filthy and there was a strong odor of cigarette smoke, even inside the cabinets. When I raised this with the host and requested a refund, I was informed that the mold is merely due to “humidity” and fine, and that he was sure there was no cigarette smell. We left the apartment within 2 hours and I am grateful to AirBnB for providing a refund for our stay.