They steal stupid stuff like people's flip flops. they party late into the night on weekdays. they behave as if residents are there solely to facilitate their good time and buttonhole them for information and directions when they're out walking their pets. they tailgate at the beach access because the hosts are too cheap to pay the association dues. they trespass on resident's property to fish and sightsee then become belligerent when asked to leave. etc etc etc.It really does degrade the character of the neighborhood and the experience of living here during the high season.  

Just for discussion purposes.I picked this pic off the internet.It looks like a lot of "Hoarder Houses" decor style.Busy carpet, busy furniture, paneling, faux rocks on the walls, flat paint.I can smell the cigarette smoke just looking at the picture.But I wonder if you owned this place, as either a flip or a rental, or AirBnB, would you rip everything out and paint it all grey and modern.Or do you think pic 2 is acceptable and cheap (quick) way to do it.Tear it out to the studs, or just light cosmetic changes, or something completely different?

Gutter extensions are cheap and a handyman could deal with extending those for a couple hundred bucks. 

So back story on our house- when we got married- her parents (who used to be in the rental property game) sold us one of their previous rentals for dirt cheap as a fixer upper starter home.

If you look at Google trends from the last five years and throw out 2020 (for aforementioned reasons) the 2021 market resembles the flourishing real estate market of 2018 and 2019.

Good area, cheap properties.

It probably wouldn’t be cheap being concrete but does seem like a liability.

We start to see this in some of our top neighborhoods, where the best lots were sold in the 50s and people built small houses on them, but it's usually not easy to buy it cheap enough as long as they are habitable.

Only 3 of the units are currently rented, but have long term tenants, likely due to the fact the rent is far too cheap and has not been raised in I'm told 10 plus years.

You can let them know your house rules but if someone throws a fit or is non-compliant it may be best to endure it if it is not too bad and look at replacing them when the lease is up.