Salar, you are a liar. My place is clean, bright and spotless. You are an unethical person, as demonstrated by your actions in my home. You cancelled your booking after checking-in because you realized you made a mistake in booking a private room instead of a whole apartment. That is fine.
What is not fine is: without telling me that you had already cancelled the booking and decided to leave, you used the toilet, jumped in the shower, used the clean towel and left a mess in the bathroom, and then you told me you were leaving. Who does that???
And all that after I cancelled my own evening plans and waited for you for more than 3 hours because your flight was delayed.
Salar, you abused my trust and my friendliness, you are a cunning and dishonest person, I fear for future airbnb hosts who come into contact with you. I hope you can reflect on your behaviour and try to be a better person in the future.