Airbnb allows you to cancel Instant Book reservations penalty-free in the following circumstances:
You suspect the guest will break your house rules or violate your policies.
You discover that the guest’s profile or booking details are incomplete or inaccurate.
You find out that the guest is not suitable for your property or is not a good fit for your hosting style.
You have a personal emergency or unexpected circumstance that prevents you from hosting the guest.
If you frequently cancel instant book reservations, your account may be subject to penalties or even suspension.