Maybe the first question is how did you find her and how well did that information match with your experience?

What might be driving the rather binary response from clients -- generally "either love of hate" suggests maybe something unique or unusual is present.  

The review is supposed to be helpful in giving actionable information in the market. If you are able to clarify or improve the information available in a review you might consider writing a review. If all you are doing is stating information that is largely accurate on some ad site or just saying "for my preferences...." that ads very little. Confirming the ad information is representative is good confirmation for others and seeing multiple review confirming that a good signal. Just expressing your personal preferences is pretty useless unless I actual know you and what your preferences are.

If you don't think you can add anything more than the "in my view" or "for my tastes" type review I would agree with MrFisher.

two points . . . .  

 
1)  If this is a provider you plan to repeat with, and she asked you not to review her, there must be a reason.  Providers are usually pretty intuitive about whether you had a good time with them.  The few times this happened to me early in my hobby career, I realized they didn't want to be reviewed because they had given me off-menu services.  I reviewed her anyway, but limited the scope of her review to the menu items on her website. However, if this isn't the case, and she wasn't asking in order to hide misrepresentations she makes in her advertising about age, weight, etc., then I think it depends on whether you want to see her again, and if so, as Fisher says, respect her wishes.  

2)  As Gag says, a 5 for appearance is the kiss of death for a provider.  Many guys think on a scale of 1-10, 5 is "average", but I never met a provider that felt that way.  If you found her the least bit attractive, then I would recommend staying in the 7-10 range, depending on your personal tastes.  Looks are subjective.  One man's "fat" is another man's "sexy-curvy", but few guys want to see a girl that is a 5 in appearance, so you are effectively giving her a negative rating with a score like that, even though you say you would recommend her.  Service is another matter, because the max score is determined by what menu items you actually received.  This is where I have a problem with the TER reviewing rules.  A girl can be the best provider I have ever seen, but if I didn't RECEIVE anal (it doesn't matter if she does it with other guys - anal is always YMMV once she sees how big the sausage is), it wasn't a doubles session or a gang bang with multiple guys, I can't give her a 10 for service.  Totally unfair to petite spinners, IMO.  

Mother taught me if you can't say anything nice, keep your trap shut.

Agree with everything that has been said here.  I try not to write negative reviews.  In fact, I don't think I ever have.  I have changed my view on this since TER is back, cause I have had a handful of negative experiences which I should have posted. Interestingly enough, the Free Market must have had an impact, because these ladies are gone from all the boards I troll.

But I digress.  

I would post if the provider did not offer services listed on her TER  profile, or did something else awful or inconsistent with her profile or advertising. An exception to that is kissing which IMHO is a very YMMV activity.  

Beauty is in the eye of the beholder, as has been said.    

For example: There was a time in which I had trouble finishing during intercourse, including when with some hot looking sweethearts.   However there was this one provider, say a "7" in the looks department, who could finish me while fucking, every time.  I am not exactly sure why or how, but it worked.  

So there you go.