Hmmm, I've mixed feelings about it. On one hand, I hate the reviews which just state "Had a lovely time, a great girl" as that doesn't really give you an idea of what time spent with a lass might be like, but I do find the one above to be too explicit.
I also object to the C word - there are times when it's effective (one episode of Dexter uses it incredibly well to stress just how serious a situation it is and tells you a lot about the character in question) but I'd never use it in reference to a lady's 'private area'.
When I do reviews, I tend to mention the girl's appearance, her attitude, and the services provided, and whether or not I clicked with her or not, and on the odd occasion have gone in to a bit more detail - but never to an extreme like that.