My recommedation is to contact Airbnb and document the situation, they normally tell you based on your cancellation policy, whether or not you need to issue refund, so whatever that is, stick to the refund amount they say. I have this situation happened to me couple times and I always do above, and plus below: first, express your concern to Airbnb about the guests will leave you bad rating, trust me, if you have CLEARLY messaged your guests that the location is 22 miles away, Airbnb normally will be able to block them leaving you review, or they can take it off after the guest posted it. So make sure you CALL Airbnb and open a case about this issue and your rating concern. Secondly, if Airbnb said they won’t block it but if is really bad then they mostly will take it off after. So now is waiting period and see what the guest say. Third, if Airbnb neither block or take it off, don’t forget you have an option to reply to the guest review, say the truth but don’t show you’re angry/upset about the situation. Tell them you still appreciated they once consider your place but sorry it didn’t work out, and ENSURE you lay out you had clearly communicate to them on the location etc. Mostly, I use reply function to thank my good guests, and clarify any misunderstanding in between problematic guests but the goal is for the future guests to see, so do it as diplomatic as possible. If you don’t know how to do it, Trip Advisory is a great learning tool where you can look up hotels responses to guest review (especially those in between 4-5 stars). See how they reply and apply to yours! Now I wrote to much...hope this help 🙂
Xiao Kuang