Service animals are dogs trained to perform a medical task, which is other than companionship or emotional support.

In Pittsburgh I have plenty of students and traveling medical pros.

Most utility companies have a "landlord policy" where you would be notified if they stopped paying, and the bill get sent to you when they take the account out of their names when they are moving.I allow them to pay separately, and most use Intuit's Payment Network- $.50/ transaction.Put whatever rules you want in the lease, mine includes clauses about medical marijuana, bed bugs, when to take the trash out, that Drano is ok to use, not to use flushable wipes, that light bulbs within the unit are their responsibility, not to turn the heat down below 50 degrees, not to change locks, no guests for more than 5 days without written permission, the list goes on.  

As we know practically anyone can get a medical marijuana card.

It will happen, just slower.

While walking through the parking lot of the townhouse complex, he slipped on ice, fell and busted his skull open tot he tune of $125k in medical bills.

The only good thing is that affected wallpaper must be removed.It is true that most molds do not cause medical issues, but why risk it on a poorly managed rental? 

They stated they had medical bills of over 10k.

You will grow slower during the good times, but likely will be able to weather the bad times until the market turns around again.  

I've rented 2 bedroom units at 1 Bedroom prices recently especially now that it's 4th quarter and it's a slower season.