In reality it may lead you to some kind of shell company with no contact info or 'friend of a friend with a license', but it's at least a good place to start

We have a condo we're looking at leasing to a company for their employee.

Also, there was a pre-move in inspection by a management company and no statement of cat urine smells or smells of any kind were noted.

From a property management co owner we don’t need any reason not to renew someone’s lease.

What are some companies that buy these loans?

I personally don't like STR's because they are more of a business than an investment(in my opinion).You didn't mention the amount of hours that you and your spouse work but I would have to assume it be between 1900 to 2200 hours assuming you work 48 weeks and between 40 to 50 hours a week.If you buy a STR and self-manage it, you are added 200-300 hours per year in additional work making your life more stressful and less time to do things that you enjoy.Best of luck. 

I am looking for recommendations on a solid property management company that can deal with a C class property the has a few section 8 tenants.

Remember: Insurance companies want you to pay the bill and when it comes to their turn, will do everything they can to NOT pay.I would get clear on that piece before proceeding further.

Returns in Big Bear never made sense going with traditional management companies. 

Does anyone know of any, I think the term is, cohosting companies in the Nashville area.