The property is 5 minutes away from a hospital, so maybe a nurse that works there and simply needs a place to crash.

I am 30 year old emergency room nurse currently living in San Francisco, but I'll be moving to Charleston next month.  

It is also helpful because if they must go into a nursing home and cannot afford to pay for it, the 5 year limit on transfers for medicare can begin running while they are still able to live in their own home.

I recently graduated nursing school (hello job security) and I want to invest in real estate.

I rented SRO's for 3 plus years, travel nurses and contract workers, I did a limited screening, an add in the local paper and I never had a vacant room. 

Regardless, you need someone who knows real estate, not a general practitioner.

I was nurse in Newark years ago and we did see kids with elevated lead levels that were treated with chelation therapy.

Bankruptcy must be fully discharged, no evictions within the last 2-3 years, on the job at least 6 months unless they are working within the same industry, like nursing, technology professional, ect.  

Big cities you might have the furnished short term lease options, corporate, nursing, and insurance rentals....no extra regs.  

(Like switching to a corporate rental/traveling nurse model.)