A HELOC is best used as a short-term debt instrument. 

Make sure it explicitly explains the process for termination if you are unhappy with their services, especially if they violate the terms of your agreement.3.

You are going to loose out on a lot of income by doing this .If your cleaner cannot complete a same day turn - time for a new cleaner You would if you were running a 53 acre ranch in Texas with significant additional logistical requirements and maintenance needs (both expected and unexpected) beyond what an average short term rental requires.  

I had analysis paralysis yes it’s a real thing, even if it’s just an umbrella term for a multitude of factors.

What is term of lease?  

I also said it would end up being a big mess and ultimately would hurt the very people they claimed it would benefit.

DSCR is for when you can't qualify on your own and want the rent to be the collateral (in very general terms) and when you are house hacking, you want the low money down.

and are guests mostly short term or mid term? 

Ideally short or long term rentals.

It really is a different animal than either long term or short term rentals so it's best to seek advice from others with experience in this niche.