This is very late to the game on this thread, but for posterity's sake: regarding this question it might be helpful to look up Fannie Mae 1038a - it appears to be the worksheet used in conforming mortgage applications to ascertain actual rental income, for Debt-to-income calculations.

Specifically what questions should one ask to ascertain if they are in good hands or not? 

Paypal, I am not as certain about. 

Vapors migrate from a contaminated source and you need to ascertain that the source of the contamination is confined to your property. vapors can migrate over significant distances especially if they get into sewers.

Account Closed  I do think it's possible and I expect it's likely during the virus scare, but as soon as certainly exists I think it's 50/50. 

It's kind of like asking 100 different people what suit size they wear, with the goal of ascertaining what suit size is best for you.

I would avoid Waterbury like the plague as well as certain areas of Albany and Schenectady.

It’s just a tool to use for value, but like everything nothing replaces the actual analysis of a property to ascertain true value.  

In the long run, passive investments seem like it'll definitely factor into the plan, but I'm presently more interested in learning and gaining experience with individual investments - assuming that having some more experience now may help to ascertain the quality of a MF investment down the road.

questions: how did you ascertain the "quality" of the title co.?