There are plenty of us on BP just reach out to a few and review their posts and just talk to them if they are open to new clients.

Americans have always had a history of moving to where land and housing was plentiful and cheap, but no one wants to do that any more.  

However, if you're set on managing it yourself there's plenty of websites and apps you can utilize for rent collection.Some may or may not include messaging for requests such a repairs or maintenance, but if you're looking for rent collection there's quite a few options on the market that are affordable.

its a question thats been asked and answered plenty.

Their living conditions are unsanitary and could invite rodents, bugs, or just unhealthy living conditions in general.

I recommend diving into some books or podcasts on real estate investing (BP has plenty!!) 

Yes @Allen Duan  - sending DM invite! 

Be sure to add plenty of rugs to minimize damage.

Plenty of STRs are failing now.

Depending on the tenant and what their financial situation is, you might also be better off giving them a 60 day notice and just telling them that you're planning to move into the property and do some updating. 30 days is usually too short for someone to have to move on, 60 days is plenty of notice for them to be able to pack and find another place.