Experience shows that many guests book WITHOUT reading the description. We have all grown to be very visual these days. But quite a few guests apparently book even WITHOUT looking at the pictures, too. No doubt, this is their good right, too.
Once they arrive they start voicing their criticism or when they leave, they write less than flattering reviews or as in the case may be here, want their money back.
Honesty is the best policy here. You want to describe your listing as truthfully and accurately as it is possible, AND then, you want to stick to your guns, too! If a guest neglected to read the listing, look at the photos, etc., he is alone to bear the consequence of his negligence.
There is nothing any host can do beyond describing his listing in a most accurate fashion and putting in Airbnb verified photos to show it.
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