Thank you for your reply, Helen.
Firstly, I contacted Airbnb regarding the extra guest and other issues, I was told if I cancel the booking from my side, I have to provide a full refund, even my refund policy is 50% 5 days moderate refund.
At that time, it was less than 24 hrs to his booking date. I was not possible to find another guests.
Secondly, the 50% cost of extra guests is only weighted 10% of his total booking. After I contacted Airbnb, I found out I had no choice but to let him stepped in my house.
At that time, I was asking myself, is that worth the risk on getting a bad review because I insist him to pay me this 10% money? I already received his 90% payment through Airbnb on the second day upon his arrival.
For me, as a host, I knew I may get a bad review, still I insisted billing him this 10% extra cost because I wanted to show my attitude: I entitle to this additional guests fee; I care about my house.
As for the collection of this 10%, honestly, I don't hope too much. He is this type of guests. I host him through Airbnb, this is all Airbnb had done to protect me as a host. What else I can do to protect myself?
Airbnb' s helping team is great. They helped me on all other issues. That's why this time I am still waiting. Crossing my fingers, no bad review......
I am sorry if it had brought any confusion. I felt a little upset here.
Thanks for your advice, Helen. Felt upset that I cannot do as you advised, even I really wanted to do as you said.
Have a good day,
Kathy