A friend w/a property in another city had just this happen. A nasty review claiming bed bugs (she did NOT have bedbugs) & friend then had MANY subsequent cancellations for the room in particular mentioned in the untrue review. Of course all of this "defamation" was on TA, so no real recourse (of course they posted a manager's response, but the damage was done).It can fall under defimation
The result of such a review would have the intent to do harm, or has caused harm
example would be........you don't have bed bugs.......a nasty guests posts a review stating establishment infested with bed bugs.......you don't get bookings after that review.......and or lose established bookings as a result of the review..