Another thought you could just keep the tri-plex and gift them the net income each year...it's basically the same thing without any transferring. 

I don't know much more specifically so ask your CPA about gift taxes (I think she could give you $17k of gift money a year without taxes) or capital gains taxes if/when you want to sell. 

I have recently been gifted my great grandparents home and it's going to be a complete gut and renovate costing approximately 150k.

I want to use her equity as a gift for the down payment to avoid capital gain taxes.

I will be glad to send you a $50 Amazon gift card for a really plausible theory. 

They began their company, Magnolia, years ago as a house flipping business and a small gift shop that they still own and sell products out of.

We are fortunate to be getting 20% gifted to us.

You can also use something like https://www.bitrefill.com that allow you to use Cryptocurrency to buy gift cards from thousands of retailers and use their services, many have discounts too. 

To expedite the accumulation of reviews, focus on competitive market pricing, provide exceptional hospitality (aka.. go above and beyond to start... think welcome gift, etc), and encourage guests to leave feedback after their stay.

We had one incident where a tenant got divorced, mentally fell apart, received a dog as a gift and kept it locked in a bedroom all day.