Maybe it's because I know about what happens if there is a hint of collusion.

That hints strongly to me that you should sell it.Also selling means you only have to convince one person to live next to the trashy neighbors and not a new tenant(s) every year or two.Dave Ramsey asks the question this way, would you buy the house again?

(Helpful hint:  If you want them to really own living there give them a handful of options to choose from for their carpet and paint.  

(hint: that's a large percentage of renters)Before you focus on the top tier of scores, it is important to remember that more than 75 percent of Americans have a score lower than 700.Review the details from Zillow   located in this link

Don't offer to help them directly, they will get the hint, but it's easy for them to rat out a friend.

Also, the Fed has hinted at raising rates 2-3 times this year.

Guess who spent their Saturday scrubbing and bleaching the tub and tile down in and around that bathtub (hint: we did while the tenants sat around and watched TV). 

 @Elsa Woods Thank you very much for the welcome and the hint on rotating the picture:) Congratulations on your Broker license! 

Any hints, advice, commentary?

I'm already on top of the first three helpful hints.