The biggest issues we had with the house:
1. Cleanliness - massive stains on the carpets, dog hair on all the furniture, vent covers look like they've never been touched, moldy looking window frames, we found a pill on the floor of one of the bedrooms, and a discarded pistachio shell under the couch (one of the kids in the house has a major nut allergy).
2. Safety - a random metal object at head level in a bathroom, the rugs in the living room have massive curls in the corners causing trips, there's a barely noticeable step into the laundry room and the only warning is a paper bag taped to the outside of the door saying "Don't Die". Deck has loose boards everywhere, no railing on a side with a 3 foot drop, and what railing there is is either loose, or missing supports, one of the benches by the table is missing a leg, and broken light covers.
3 Security - Most of the doors and windows don't have screens, making it easy for people to either go in or out when you have to leave them open to try to cool off the house. None of the locks seemed to work correctly, front door had to be jiggled so that the automatic lock would open, door to the deck would automatically lock when closed so you'd be stuck outside, lock on sliding door in upstairs bedroom barely held, and door in dining room literally needed 3 hands in order to lock.
We had more issues, but I'm out of space and they are more nitpicky than serious. I have pictures of most issues stated above if landlord wants to see.