It was different in the 80s when interets rates were in the 15% range and a 10% seller financed deal made good sense to both parties.

But they have been a nightmare...not paying rent, throwing parties every night, trash everywhere.

I would expect anyone in obligations to in a contract to notify the other party of force majeure thereby setting up that negotiations are required to complete the contract. 

I have been showing them and have some interested parties but I’m concerned they might stop  paying after the first month.

Right now high activity/interest spaces:Real Estate (lower interest rate) Stock Market (casinos are closed) Dogs (pounds in NY don't have any left) not crowded spacesus $$ very strong maybe buy property in Brazil. 

We are able to cashflow the unit and that part is a success.

If I was guessing, I would say that there may not be a firm agreement inside the household on whether to move or not and sometimes if one party is less motivated than another, it causes deals to backfire for little things.

Perhaps a nice 1950's built bungalow.Always hire a 3rd party property inspector to give you an unbiased feel for the home.

Set up an escrow account and all parties are protected.

The tricky part is that I am a non-resident living outside of the US (so basically no ties to the US other than my 50% stake in these two properties).