@John1432
John hello, I have no way of knowing how you approached Airbnb with regard to this review but Airbnb will never (and has no right to) try to overide the laws of the land.
You simply state to Airbnb CS that Egypt's laws prevent you from allowing this guest to stay with an unattached person of the opposite sex and you require them to remove all traces of this hosting as it may implicate you in the breaking of the country's law.....John, they will remove it, no questions asked!
But it is no good approaching CS and saying this guest gave you a bad review.....blah, blah, blah!
Tell them the guest required you to break the law and John, it will be a done deal.....gone!
Cheers......Rob