@HTXinBOS - As a remote host for almost 8 yrs., I would never want to witness myself how a guest leaves my rental, unless it was truly near-perfect (to which my housecleaner has attested on many occasions).
I prefer to witness the positive rather than the negative. I have no desire to see the crumbs, stains and crusty undies left by guests because those very same guests and I have usually already “bonded” (via email) into a cordial relationship. I do not want to be disillusioned.
It is extremely disappointing to learn from my housecleaner that the guests’ living habits were not as expected. I certainly don’t want to see their bodily smears on the toilet seat or worse, so although I will mark them down in cleanliness…AND I personally would not have them return…I would not publicly mark them with a thumbs down because other hosts may not be so persnickity as I am.
Like you, “I don’t want to give them a hammer over fixable behavior.”