You can buy my book, the book from Brandon in the BP bookstore, or Every Landlord's Legal Guide by NOLO. 

Owners mistakenly ASSUME all PMCs offer the exact SAME SERVICES and PERFORM those services EXACTLY THE SAME WAY, so price is the only differentiator – and they often select the first PMC they call!

The seller responded that since the issue was repaired and he believes there is no ongoing problem, he did not think it needed to be disclosed.When I asked him to extend the inspection period so I could follow up with the repair company and conduct my own inspection, he declined.I disagree with this interpretation.

"What Is The Biggest Risk For 2025" And 13 Other Highlights From DB's 2025 Market Survey"The Deutche Bank 2025 global financial market survey had 471 responses from around the world, and was conducted between the 10th and 13th of December 2024.

Because the chances of successfully concluding a wholesale transaction when you lack experience, knowledge and capital are so infinitesimally small that you’d be better off playing the lottery.  

Aside from the real estate websites (idealista, sapo,Imovirtual) and AirDNA, is there another website/source that we can use to analyze the areas?

Quote from @Dennis McNeely: In a sandwich lease option, the investor exercises their option with the property owner to purchase the property when the tenant-buyer indicates they're ready to exercise their option and purchases the property.

Then at the last minute, I had a strong instinct to pull out and did not follow through.

You have come to the right place! 

If the software is not simplifying your life or making you more accurate, you shouldn't use it.Software does have extremely helpful features like online payments, marketing syndication (click a button, and your property is advertised on multiple sites), electronic document review/signing, maintenance tracking, and owner reports.