A common source of Subject To deals is people in distress (foreclosure) who have a pending sale date.

The funds that provide best returns typically have lower overhead costs.

@Ahmad Moore Based on the info you provided, a CPA who specializes in real estate would get you the most bang for your buck. 

Selling @ $500kLender providing $490kCan the remaining $10k be carried by seller?

The more up-to-date or "fresh" data the better.

@Melanie Hernandez two questions to ask are: can you effectively and profitably run a STR business giving your guests a wonderful experience and can you provide value to and mitigate risk for your property owner?

Lead Generation & Marketing: Do sponsors provide qualified leads or expect you to generate your own? 

I clean all shared areas of the home, cook occasional meals for guests, lawncare, maintenance, and shop for them (consistently provide milk, bread, basics etc)?

If possible, I may have the service provider sign-it as a "just in case".By the way, it was my CPA that provided both ideas to me :)

The initial investment is providing a loan, there is no tax write off.Similiarly, there is no income recorded when you receive the loan proceeds back.The only time there may be a potential write-off of the original loan amount is if the borrower is not able to pay it back.