@Morgan166 It seems like since you were at home and close enough to the unit to be able to tell whether someone was smoking outside, you would've also noticed if unregistered guests were arriving at the property or something like a party was happening. It sounds like if it weren't for your app, you wouldn't have noticed anything at all - so it definitely wasn't disruptive. (Apps can also be glitchy, so the notifications might not have even been accurate).
If there's been no disruptive noise, no evidence of rule violations, and no sign of unexpected visitors (which your listing doesn't appear to have a rule about), I wouldn't look at this as a problem. Being up until 5:30 AM is quite normal for me, both due to having a somewhat nocturnal rhythm and working for a client many time zones away. I don't have OCD and I don't smoke, but if I were staying at a home like yours I would find it nice to quietly go out to the patio and enjoy the view from time to time . It is one of your biggest selling features after all, so naturally you'll attract guests who want to make the most of it!
I don't recommend bringing the notifications up to your guest or suggest anything that would seem like you were spying on them. But there's nothing wrong with sending them a message to ask how everything's going with their stay, if their room is comfortable etc, to make sure there's not a problem that's keeping them awake.
