Before committing to paying off the property, analyze whether there are ways to optimize revenue, such as better marketing, adjusting pricing, or upgrading the property to attract higher-end guests.Return on Capital: If you pay off the mortgage, the “return” is essentially the 7% interest you’re saving.

It will likely be a “commuter” community and will still attract plenty of great tenants.

A study recently completed showed that most squatters are attracted to two properties: vacant and those listed for rent stating 'for immediate occupancy' or vacant. 

The virtual agency, The Real Estate CPA, was featured on Bigger Pockets and has their own podcast but I have not found any reviews for them. 

Build a system that attracts the right audience.

What attracts people to Las Vegas?

I looked at local companies, and while many locals have great boots on the ground, they lack the economies of scale and systems like what Avantstay uses to attract, vet, monitor, and enforce. 

They're investing tons of money into those areas, and attracting a lot of good renters who work in the medical profession and will pay good rents to live close to their jobs. 

Cost of Construction: Since your dad has construction experience and labor connections, the cost of building an ADU would likely be lower than market rates, making it an attractive investment.

I believe Paula Pant had a recent podcast episode on Afford Anything that featured a couple who lives in Japan and invests in the US.