These are just a few basic things I'd look for.In reference to the agent, you definitely want to find the investor focused agents that does a lot of deals and lean on them for their expertise.

It's basically set up for MTR and much less hassle, but less vetting, and way lower cost.

As soon as I read "hired a property management company to handle the day-to-day" it was clear to me and anyone else with a basic understanding of the rules that he was likely SOL.

My cleaners have the basic resupply built into their costs which means guest is paying for the consumables.  

Basically a turnkey investment with all new interior upgrades that is poised to bring in solid rental income.

Basic plumbing, electrical, HVAC knowledge will go a long way.

He was basically Someone that was in their early 20s maybe a relative to someone in the coaching company.

Also, have you made any significant alterations to the property or if it were put on the market today, would it be indistinguishable from a standard 4-bedoom house (are there any extra walls for the SRO, constructed locks/barriers etc.)If its a standard SFR and the leases are very short term - there is a path that you could refinance this with a DSCR as basically a Short Term Rental and then potentially change strategic course back to SRO if needed at a later date

In many jurisdictions any lease 24 months and longer basically conveys additional rights and a simple eviction is no longer feasible. 

Basically, they are a turnkey STR company.