Of course the tenant doesn't want to pay, she's got a free ride.

While short-term rentals in areas like Kissimmee, Florida, can pay for themselves and offer lifestyle benefits, the ROI typically doesn’t match what I see from my traditional portfolio of long-term rentals in North Texas.That said, short-term rentals can still be a great choice, especially if you're drawn to the area and the opportunity to combine personal use with investment income.

How much do they want you to to pay, to pay off one of the mortgages (or both of their existing mortgages)? 

The only extra pay for guests is the surf-rider.

Do you want to be passive (ie give your $ to someone and they pay you interest, or you put the money for the opp and get equity, etc)3.

We typically pay somewhere in the range of $3500 for a new, basic furnance, including install, if there are no other modifications to the system required.  

For example, they have not sent us the rent they owned us for the last three months, and here is paperwork to show it is not in our account, here is the contract with them stating they would pay on this day each month, and here is the title of the house in my LLC/name to show you we own the property too.

It's debt you'd still have to pay back, but at least you will not touch one of those two amazing interest rates. 

You pay for what you get remember LOCATION , LOCATION! 

Taking the loss now is preferable to paying out monthly for the privilege of being a landlord.