One of my rental properties is located in a low-income area, which presents unique challenges in finding suitable tenants.

LLC is a pass thru entity so it should reflect on your individual return

Perhaps some more than others, but each one brings a unique perspective.

Depending on your state and your business, you may have some unique and potentially urgent opportunities.

This metric does not work, if trust falls out of place, and faith falls from the team and rests then on individual greed.

And when I speak with people (or write on my blog) I'm always VERY transparent about the unique challenges of the market there.

You'll likely find it easy to find people who will tell you what you want to hear, but you really need hard facts not speculation.But for some speculation, if you're talking about the Nantahala River or Little Tennessee, sure I think you might be able to do $22K/yr, but not much more, unless perhaps the places are uniquely styled. 

Is this something you've ever done as an individual landlord, or is this something more for larger multi-family properties only? 

When you do that groups of people will apply, rather than random individuals.

It recently dawned on me the idea of a non military affiliated individual assuming a VA loan, would this individual be able to then also gain the benefit of using an IRRRL since they have now acquired a VA loan through assumption?