There were plenty of syndicators who produced a big return like that (occasionally) in the past.

Chattanooga is what I'm thinking since I have friends travel there occasionally for work who can help me fact check things from time to time if need be, and I can afford things like multi-units.

We do our dishes in the bathroom using a plastic bin and dish drain that we setup in our jacuzzi tub.

I would not offer anything for the horrible inconvenience of being forced to wash the dishes by hand, "high end" or not...gasp!

Applicants dish them out in every market. 

Yes, occasionally things get missed on inspections but maintenance or other vendors  should be on the look out, too and reporting these things.

Some residential realtors occasionally sell real estate that will become rental properties.

You don't hear many people talking about this, but you'll get much bigger pay jumps (10-20%) switching companies every few years compared to staying at the same company to get the standard 2-4% a year with an occasional 8-10% raise. 

How is payment for shared costs (toilet paper, dish soap, etc.) handled?

It's 7k/month rent and the renters are both 1. totally incapable of living a life with typical home issues (occasional bug in the house, weird smell here or there) and 2.