@Moshe2
Hi Moshe, unfortunately when you only have 11 reviews, one poor review is going to have a big impact on your rating. The positive side is, the rest of your reviews are great and unfortunately try as we might to avoid them, we almost all get that one bad guest at some point. If your next 12 reviews are positive (which I am sure they will be looking at your history) that rating will come back up to 4.8 again.
The guests review is their perception of the stay Moshe, sure it's a bad review but nothing in it contravenes Airbnb's review policy. The only thing you could possibly contest would be the comment ......"Tried to charge me extra for dumb sh*t"! But Airbnb are notorious for understanding guests complaints ahead of understanding hosts!
The one thing that will guarantee you a bad review is to get into a disagreement over money. Sure the guest did the wrong thing by sneaking in undeclared additional guests, but once again, unfortunately because of Airbnb's guestcentricity your best course of action is to tell the guest you would have appreciated it if they had talked to you about it, leave it at that, tell them in private feedback, what they did was against Airbnb's rules, and once the guest had left their review report them and explain they consistently broke your house rules creating damage and disturbance, and staged a party gathering with undeclared guests, which should be enough for Airbnb to take action against them.
Moshe, I have over the years riled about the review system. It's more of a punishment system than a reward system but after a while your reviews do the talking for you. Once you have 30+ reviews who do you think we are going to believe, Faith with that revenge review of hers, or that other 29 that thought you were great. Believe me, that review will do Faith more damage than it will do you!
As a host, there is no way I would take her on as a guest, she has cooked her own goose.
All the best Moshe, just keep doing what you are doing.
Cheers.........Rob