@Chris-And-Carolyn0
I read the review of A.
It is not violating Airbnb's review policy.
Seems to me the guest was in general little unhappy about the accommodation(-price)
But mentioned also positive feedback and review was 4* !
It is not to determine if she saw "a couple of cockroaches" (no photos).
She should have contacted you.
Your public comment on the review is OK.
Maybe less bookings has other reason, first check statistics in section "insigths" , look at "amount of views".
Dealing wih Airbnb about removal of a review seems to be a waste of time, as you can see in multple posts here about this subject.