Sign an Assignment of Contract:      Check the terms of the contract.      

I was looking at DSCR loans because they don't require extensive checks like the bank loans and they "only" look at the income generated from the property to qualify for the loan.

They often provide standardized lease agreements that comply with state and local laws.Additionally, many landlords use platforms like Avail, Zillow Rental Manager, or TurboTenant, which often include customizable lease templates that are state-specific.

Attend in person, bid, if you win you have to pay right then via a cashiers check.

Check out YouTube, literally 1,000's of videos from 100's of creators on Section 8 investing.

A formal business built on this seems overkill as you’re essentially paying someone for a service that already has standard model.If you and the parnter have distinct business tasks/abilities (i.e. not what you would hire an agent or contractor for), such as off-market lead generation, that’s a different discussion.

And many hotels don't have 24 hour desks or 24 hour service.I don't get why all these newer regulations expect STRs to operate to standards that aren't even required of hotels with full-time staffs. 

Once they have seen the property and are interested, the prequalification and background checks will do the rest of the work in weeding out undesirable tenants for you. 

Check their occupancy, nightly rate and amenities.

You might want to check out listings in your neighborhood to get an idea of the going rates and what amenities other hosts are offering.