I usually leave a review whether or not guests do. Usually "x and her friend were great at communicating before check in, polite and friendly while they stayed, and left the room in good shape" unless something stood out. I've been known to call people fantastic if I'm feeling charitable.
Our most recent guests were... fine? Like, there was a small blood stain on the (brand new) sheets, but they didn't try to hide it (new metric, thanks @Evelyn) and I was able to get it out with dish soap and gentle, circular massage.
They were in and out at odd hours (and i think they did laundry at 2 am), but none of that is (currently) restricted activity... and when one locked the other out he didn't make a fuss, just slept on the couch. They asked to change their check in time that morning, but were very polite about it and I was able to accommodate them with no trouble at my end. As we listened to them take (really ...thorough) showers, my dear husband actually said "it's going to be hard to review them, isn't it?"
At least they didn't let my cat escape? (Thanks, previous guest, for new rating metric- how often do you let the cat escape during one stay)
So yeah, what do you, oh future host, want to know about my guest?
(Just got my 4th booking for May, closing the rest of the month off. But June and July are empty. Crickets. Gotta have faith a faith a faith ah... and mess with my calendar)