An extremely dirty client went mad when I reported to booking about the mess his family left and I prohibited them to come back next year, which was their intention. He went and lowered the rating he left before,saying the house was dirty before. What's the point of reporting anything an warning future owners if the guest can revenge, blackmail and change his first ratings? I have photos to prove how the house looked like before and after they came, photoshuts of his before and after ratings... They don't have any proof to argument, but their gossip and manipulation has the last word?! Does booking do anything to protect the owners? As far as I see the guest could say I slapped him, violated him and took a naked photo of his toddler without any proof! What is this, an inquisition witch hunt?! How do you protect yourself from manipulative, vengeful liers?