My advice is put it on as many sites as possible and put strong discounts on extended stays and you can attract both simultaneously.

Honestly, their loan programs are too good to be true!

I would think of this problem differently: I might encourage them to explore ADUs... this would give them an additional stream of income and would likely only require a relatively small chunk of money in their savings (relative to the total cost).If they could partner with someone that has experience building and/or flipping (to qualify for the construction loan), then cash them out with a 30-yr DSCR loan (and use that as the builder's profit), then they could rent the property and enjoy the cash-flow.

We'd like to seek a construction loan to complete the build of our new home - does anyone know if a typical real estate rental business plan would be sufficient to show potential income increase? 

If an investment property you can do a DSCR loan. 

In november of 2022, I loaned private money to them for a term of 12 months.

It has two loans one from 2007 for 744k the other is 150k that was borrowed in November 2022 that has a balloon that burst in 2024 .

-mid-term rental property (rented room by room via furnished finder), VA loan, cash flows $500/mo.

I would only explore second-lien positions loans if your current interest rate is in the 3's.

Is there a specific reason you are asking about hard money loans for a property that could be stabilized with a DSCR loan?