@Nina75 , we have different standards of cleanness here in Europe. Ok, I wrote this context of review for this american guest's behavior (I think it's informative. What do you think, guys?):
"We *** DO NOT RECOMMEND !!! *** this Guest to any other hosts all around the world. We *** DO NOT RECOMMEND !!! *** this client to the hotels. The client made the act of vandalism towards the room interior of our One of the Oldest Guest Houses in Europe which is around one hundred fifty years old governmental architectural monument. During 18 hours of stay the entire room was covered with oily stains of food (breakage of the house rule of not eating in the room) and the huge chemical orange stain was left on the light carpet near the sofa. We made all photos of damage and documents signed by the Guest upon the arrival. We have 3 levels of info checking and verification of the House Rules and very strict protocols of settlement. The Guest agreed all the conditions and the damage pricing on all three levels of verification. Only after that we placed him in our house. The cost over a night stay is less than forty US dollars. The damage price for the stain removal in governmental architectural historical monument is 50 dollars. The cleaning sums are shown in our ad online, were sent in our first introduction letter to the Guest, which was the same copy of our ad online, and also was represented in the paper version of the contract each guest signs upon the arrival in two copies, which is the copy of the info launched in our ad online as well and helps to keep the discipline of our house on a proper level. This Guest stayed with in-house host, hit the doors in extremally loud way, damaged the textile surfaces with greasy and chemical colorful substances. Later the Guest LIED to the representative of Support Airbnb Department, that he didn't do anything. Finally recognized the fact of vandalism and wrote back on airbnb platform to us what was that exact chemical coloring liquid he poured on our light carpet in the room. So our cleaning department was able to neutralize the molecula of that huge orange stain. The Guest COMPLETELY REJECTED to pay the damage. In case if the Guest shows up near our house again or books our place we will be calling the police right in a moment. The behavior of the Client was close to menthal disorder. He might be very dangerous for the hosts and the properties. *** WE ABSOLUTELY DO NOT RECOMMEND *** this person to any other hosts on Airbnb. WE MAKE THIS WARNING FOR ALL HOSTS AROUND THE WORLD for the other hosts' and properties' safety. The act of vandalism took place during the Guest's stay with in-house host. The Guest's behaviour is absolutely out of control. Nothing stops him. When we opened the room we were in a complete shock like if we let somebody from the zoo stay over a night in a room, not the human being, The damage during these eighteen hours of Guest's stay acceeded the wear and tear from the summary of all clients we got from Airbnb over the last year. This is the first time ever in our one hundred fifty years old rental practice we put such a low rating to the person. WE WARN ALL OTHER HOSTS AROUND THE WORLD - SAVE YOUR PROPERTIES AND HEALTH and listen to our detailed review represented in here. P.S. We also found the trash floor basket full of leftovers, standing on the white table poured by grease and orange liquid stains. The white table is meant to be the neat working place for people. The motility of this client was extremally weird. WE WERE ABSOLUTELY SHOCKED BY THE POOR LEVEL OF CULTURE AND COMPLETE ABSENCE OF RESPONSIBILITY THIS VISITOR REPRESENTED IN OUR HOUSE. We faced an adult big sized man with the motility and the level of responsibility of an infant. We transfered this case to Airbnb department which is working with dangerous clients."
