There are many reasons why a gent might decide that he would not return to see a lady, even though she lived up to her end of the bargain.
Were the pics her? Yes
Were her TCB skills good? Yes
Was her attitude positive? Yes
Was her menu what you expected? Yes
Did you receive the full time allotted? Yes
She earned a yes recommendation. Period.
"No" means stay away. If she did nothing to warrant a cautionary tale, then she earned a yes.
Maybe she had tattoos that turned you off, maybe her BBBJ was a turn off to you - you like it slow and sensual and her style is fast and intense, or vice versa. Maybe she had evidence of "baby damage" as some guys like to call it, and that turns you off. These are all valid reasons why one guy would decide not to see an otherwise excellent provider.
If she lives up to her end of the deal with her attitude and performance, then give her the yes she deserves, and explain in the ROS why you personally would not return. That lives up to your obligation of giving a fair and objective review, while also giving her the kudos she deserves for doing her job well.
The peanut gallery is about to say "But guys without PA can't see the ROS". Well, tough. All it takes is one review, or paying for PA access to see the additional information available in the ROS.