Not the age of HE heater in all units and strapping and pans.Outside, look at grading to make sure surf water runs AWAY from the building.  

If I was strapped for cash I'd at least scrap together $300-500 and have an attorney look over the contract I found to make sure it didn't violate any laws or really put me at a disadvantage.

I don't know how you want to or can structure the financing, but do not go into a STR purchase cash strapped.

Added to that the nipple extending out of the ceiling is not strapped down, I can push 4" or so of the pipe into the ceiling.

Mat O'Grady's reminder that simplicity comes with putting in the work is golden advice.

I add a new one and new bath mats after long turnovers,too, as I find the water is not so much from the shower but the tenant standing there wet....I like to buy them all on sale : curtains, rings, mats and be ready for the next turn around (good bang for the buck, making the bath show better and protecting from water ).

@Mat O'Grady That would be awesome!

You won't have hurricane straps, or impact windows and doors.

If you want to dig into the topic farther, I would google up @Mat Sorensen & Mark Kohler from KKOS Lawyers & Accountants.

If you own them all in places like California, Arizona, CT, NY, NJ, or other states that are strapped with high taxes, and expensive price points.