Me personally I wouldn't write a negative review. I always carry extra $$$in case to extend. I have used that n asked to see line up again hopefully sending message she wasn't good enough. It just gives me satisfaction that way. Isn't that why we punt. No woman alive no matter how little respect she has for you likes rejection. Battle of the minds it is.
I think posting negative reviews is a must. People are spending their hard earned. Least we could do is help each other out
I think it is perfectly OK to describe your experience. Punters can then interpret that experience for themselves. If that experience is bad, that information can be very helpful for other punters.