No more verbal verifications, no more lies. f they have a prior eviction(s), or their income is too low to support pay the rent, then sorry, their application will be declined.

I am interested in cash flow as a way to support my consulting business during a downturn and help diversify my overall retirement portfolio that very large in equities. 

I don't know of any websites where sellers will advertise this, you'll need to find them and then negotiate with them.

Places that can support a restaurant/food are very difficult to come by because of septic and zoning requirements.

Should I use paid, targeted advertising on Facebook or other social platforms (this I have practically 0 knowledge of)?

Any information and support will be appreciated.  

So, maybe the floor joists can be sistered and supported, instead of replaced. maybe the water heater can be fixed.

You advertise on Go Section 8 and the tenants will come find you,....in droves.

If so, maybe she can approach them and get a big group together and spend some money advertising a common open house with raffle.

Below are a few more thoughts on pros/cons.Pros: If you're new to real estate in general, you'll learn the mechanics of RE transactions, the governing laws and the key participants and services that support a transaction.You will interact with other realtors that may help accelerate your understanding of the market values and dynamics you're working in.