Find the closest properties in terms of location, amenities, etc. on Airbnb/VRBO and compare that way.

That sounds pretty straightforward and we've got something similar here too and it's not bad. 

And it is very straightforward to file these, so I would expect it to be well within the scope of any operator sophisticated enough to pull off an owner financed deal. 

From what I've heard, local banks are sometimes more flexible than the big guys.A buddy of mine managed to snag a HELOC on his rental property, which isn't always straightforward, but it opened doors for him.

Equity split - This is more of a straightforward partnership where profits are divided based on the initial capital invested.

This separation allows you to manage risks more effectively, ensuring your personal credit isn’t impacted by the ups and downs of your real estate ventures.Building business credit is more straightforward than most people think.

The process is pretty straight forward and not complicated at all.

Here is their webpage:  https://www.titanbank.com/about-us As for Solera, yes, the main reason I chose Titan Bank over them is because Solera's webpage didn't have a professional enough look and feel to it compared to Titan Bank. 

She works her butt off, and seems honest and straightforward.

Pre-internet, being a landlord wasn't easy, but it was straightforward (this is a gross oversimplification).