Check around the neighborhood to see how clean it is. Cleanups seem to be handled in part by volunteers (old people) in the neighborhood and the local village chief. Areas can vary even when they are close to each other.
And check out the exhaust fan over your stove. Make sure it is not a filthy mess or demand it be cleaned or replaced. And the fan in the bathroom. Does it go anywhere? Some just blow the moisture into the ceiling.
And your gas heater should be outside not in a balconey that has been closed in to make more room.
Check carefully how clean curtains and walls and such are. In other words, take some time to really inspect the place. Cracks and smudges and such can really get on your nerves once you move in and notice them everyday.
AND, if you are anywhere near open fields or farms make sure they don’t burn on a regular basis. I overlook the river in Muzha and have a fantastic view down it and over green fields and lush mountains but the asshole farmers just across the river burn their leaves for fertilizer almost every day. Occassionally they even burn their garbage. Fortunately aburning only lasts 10-15 minutes or I’d be over there with a shotgun.