My elderly parents were going to visit us last spring, but my daughter came home from school with a sore throat, so I went to cancel immediately, and they weren't willing to work with me
at all, and also mentioned I shouldn't have booked for my parents. I did that because they're not very tech savvy.
In any case, I did a chargeback and got all of my money back, even though I would have been happy to forfeit some since this was the day before they were supposed to arrive.
Airbnb did make some noises about removing my account "if this happens again" or something like that, but they can take a hike. The whole thing was handled very badly.