Our goal is to establish a structure where the property owner can secure financing based on the long-term lease with the operational company.Any advice or insights from those who have navigated similar situations would be greatly appreciated!

Secure the debt by real estate, now we're talking a great partnership deal.

Our negotiation approach focused on building rapport with the seller, allowing us to secure the property below market value.

They have a group of funding sources that will compete against each other, this helps keep the final interest rate within reason, and offer a partial refund if they are unable to secure financing. 

Securing financing upfront is paramount.

Syndicators do this because most passive investors are not sophisticated enough to realize the "security" of the preferred return means they usually are giving up the potential for massive returns if the deal does well.This next comment would apply for all syndication.  

Unfortunately, the husband lost his job about 8 months ago and, from what I'm told, hasn’t been able to secure another one—not even in retail or fast food.

For the past two years, my primary income has been my Social Security, and my home is fully paid off.

A good property manager can help with tenant screening, enforce lease terms, and handle evictions more efficiently if it comes to that.Require a Larger Security Deposit: Within the bounds of local regulations, a larger deposit can provide a cushion in case of damage or unpaid rent.Consider Rent Guarantee Insurance: Some companies offer insurance products that can cover lost rent in case of tenant default.

If I am doing the security deposit I want to quickly see how old that carpet or paint is.