There are a few things you can do.
1) Be proactive.
We started messaging as soon as they book with the two biggest issues we've had with non-readers: "Hey! Just making sure you noted that you are booking a room and bath in a home and not our entire house and also that we have cats. If you made a mistake, you have 48 hours to cancel the reservation penalty-free."
We may change this up depending on their incoming message like if they ask a weird question about dietary needs so we have to tell them we don't actually offer breakfast.
So, in your case..."Hi! Thanks for the booking. Just want to make sure you noted that I live in a busy traffic area and you might need earplugs or a noise-cancelling app on your phone if you are a light sleeper. If this is not okay, then you have 48 hours to cancel penalty-free."
2) Make sure you have this in those new pop-up messages.
3) Greet them and give them a quick tour and make sure to mention the earplugs or that they can download a free white noise app (or maybe you provide a white noise machine).
4) Have a printed binder in the room with the house manual and house rules and mention all the things.
We tried the hidden message in the house rules and it only worked 1 out of 5 guests. That would have been too many cancellations.