Don’t get too caught up in the processes I mentioned and let the information consume you.

I know it's time consuming and will drive you nuts, but that's the only way to learn the business and hone relationship with subs.

For vetting / screening purposes you can look up license information with: NMLS Consumer AccessAAPL Member LookupCompanies should have a page here on BP that you can search for reviews. 

For instance in FL, if I lend to you in your personal name, even with the proper B2B purpose loan, and Non-Primary Residence disclosures, and you default, if you claim that it WAS your personal residence and you were not clear about the disclosures, the first thing the judge is going to do is look to see if I as a lender met all the stipulations and regulations concerning consumer loans, such as CFPB, Section 32, and RESPA requirements. 

Other than cleaning fees, you should make sure you factor in higher insurance rates that cover STRs, utilities, internet, consumables (toilet paper, soap, etc), landscaping, snow removal, linen replacement.

I Googled  and see that I can choose to file a consumer complaint on shady craftsmanship.

I used to manage an AIRBNB property that remained booked about 80% of the year and it is a pretty time consuming job for even one property in high demand.

There are consumer protection laws concerning paying in advance in many if not most states.

Contractors do have stipulations when filing liens- I believe after 90 days and three notices to the consumer, the lien can be filed with the county.

Not the consumer side.