I have read stories where evicting a guest is considered a host cancellation and you may have to refund all days of the reservation where they didn’t stay until normal check-out time. Compared to when a guest cancels where, depending on cancellation policy, the host only refunds days whose normal check-in time is more than 24 hours from the time the guest cancels.
This thread is a decent read:
Why is this relevant? Even if they had been great guests, you would’ve lost that relationship booking.
No. If the guest contacts you, refer them to Airbnb. Don’t refund anything to them directly. if Airbnb asks you if you want to refund, then you do what you feel is right for your business. If Airbnb decides the guest should get a refund without asking you, Airbnb will issue the refund. It may come out of your future payouts, and if it does, it’s probably not worth pursuing any further.
Airbnb allows guests and hosts to review any booking cancelled up to 24 hours before check-in. I doubt even Airbnb can tell you why they allow it.