As a longtime AirBnB user, I was shocked when I showed up at 5 PM on a Friday after a long trip to a dirty house. The maid had flaked. When I contacted the rental company, they couldn't get in touch with her. My options were 1. wait it out and hope she calls back, AND is able to come clean or 2. Find a new place. I was left at 5 PM on a Friday night needing a new reservation without any resources. I ended up booking a comparable place which by then was 2x the nightly rate.