It may be worth looking for trends as well.
If a SP has had some negative reviews in the past, followed by positives, that may be a good thing. She has "upped her game" or gained more experience in her profession. Learned what her customers want and like.
Positives that are now negatives are less appealing to me. Maybe she is jaded, lost her enthusiasm, can work less hard, winging it, seeing what she can get away with before she gets less busy; or simply now older and larger.
The reason for the negative is worth pinning down, and is more significant IMHO.
This could be anything.. a lack of kissing, no OWO, did not read the email booking sent the night before, one missing tooth, music too loud, whatever.
I normally compare this with my own wants and wishes. I do not like the idea of kissing a stranger currently, (mainly a covid thing, with other strangers involved.
) I do not punt to count teeth.
Each to their own I say. If the reason for the negative is something that you find negative, do not book. If the reason for the negative is something that does not bother you, you could just ignore it.