The room I got this time was on the top floor. On the first day of my stay, I was quite bothered by the ants on the table. My suggestion is to spray ant repellent on every room someone checks out. Yesterday, I could have asked for Baygon to be left in the room, but it was a bit of a hassle waiting for cleaning before asking (I only realized the ants were present the morning of the second day).
Also, the condition of the refrigerator: don't just check the drinks consumed by guests, but also check its condition. It worked, but it had a lot of ice. If the room wasn't filled or left outside during a power outage, the ice would melt.
Then there was the sound of rats in the ceiling (because I was on the top floor). The thumping, thumping, thumping was startling, and the rats were making noise for a long time.