It happened to me. And I'm seeing that there have been many others like me.
All hosts~ please be aware~
Upon receiving the message "GUEST requests that you cancel" you will be faced with 2 options (1) Cancel (2) Keep reservation.
Unless you DO want to be penalized for a host cancellation - DO NOT click on cancel.
Click on "keep reservation" because the guest does not need the host's consent or approval or agreement to cancel. This is just another ploy to TRICK hosts into taking the blame.
Guest requests that YOU cancel - the second you click CANCEL this will become a HOST CANCELLATION.
This will negatively affect your commitment rate, and Airbnb will do nothing about it. They will say, you (host) agreed to cancel so this is a host cancellation - and you only have yourself to blame for agreeing to cancel.