I recently wrote a few previous posts on this topics:
... and I thought I'd give an update. This was a message from a host that I used (abridged):
First of all I wanted to thank you for leaving the apartment so clean and tidy, I really appreciate it! I just gave you 5-star rating for everything, and I will be happy to see you back in town! If you need any help or support, you can contact me anytime and I am happy to help! I would be very happy if you could give me a 10-star rating as well, because I am very new to the platform and I need your help as well.
I was cleaning the apartment recently and found 10 euros on the floor. Could it be yours?
So...give me a great review and I'll pay you 10 euros, that's how I read it. We definitely did not leave 10 euros laying around.