Aside from that, it looks like it's in good shape and has been well maintained!

Lots of questions before a qualified answer can be given.HOA's in Arizona are common and in many cases very good at maintaining nice clean properties in a conforming way.

I'm betting that the spread maintains itself longer than I want to wait, as fixed income investors currently want to lock in safety and the MBSes already traded on the market are going to be faced with substantial refi prepayments (which no new MBS buyers would want to receive right now, without a place to reinvest the proceeds).

I had always thought of Alabama as a little far for maintaining, but I recently heard that the single-family homes market in the South is still very strong right now.

Are there added costs of repairing and maintaining AC units because it will be more work to remove, do work, and put it back into place?

Your Landlords obligation is to maintain the property, if something is broken and you requested it fixed, if she is responsible she should fix it. 

I have driven through the park and, while the homes are not new, they are all well maintained, everything is mowed, and all yards/homes look nice.Pics attached. 

What does your lease say about maintaining appliances and what you provide? 

That's 2/3 of my income not coming in for an unknown period of time.I'm also pondering my ability to maintain by paying some of the mortgage and the bills of the building if it remains empty for a while. 

@Sergio Aguinaga, One solution for the Seller liability risk I mentioned is requiring the Seller to maintain a personal liability policy equal to $2-$3 million.