In a situation like we have now with COVID-19, it is guaranteed income when some tenants may not be able to pay due to unemployment...

According to the US Labor Department, the running four-week total of displaced American workers filing for unemployment is a whopping 22.03 million.

People are receiving money directly into their accounts through the stimulus checks and an additional $600/week on top of their base unemployment payouts.

If you are eligible for a Solo 401k plan, the extra features may come in handy relative to a self-directed IRA. 

I think most of this kind of people( not all) already got used to live like that, cheating on banks, car dealers , changing jobs, claiming unemployment, i dont think they ll ever change.

I actually wouldn't give them the option, just advertize it with that as part of the package and a selling feature.

Just watch the news over the next 6+ mos as many fringe homeowners (folks that went all in with their last $45k to buy with no savings net) lose their homes while unemployed during this pandemic and the ensuing shakeout.

Is there a variety of industries so that if one shuts down you won't be stuck with unemployed renters for a while?

The home was less than 10 years old and had very nice features that would make it a desirable rental and retail home.

It's not until people are out of work and unemployment continues until you see the effects in Real Estate.