@Denise CarringerMy preference is to go local - some community banks offer this type of service or local escrow companies, which is what I found, because they offer a higher level of service than most national.

Sometimes they forget to tell you that many tenants in Detroit don't pay (depending on the property manager skill and the type of tenant) - but taxes are very high in the city and so is insurance. 

Hi Marc - Aircover offers some protection for damages caused by guests, but it’s limited and doesn’t replace having dedicated STR insurance.

Depending on the volume you would be submitting, find a company that does not have high monthly minimums and can walk you through the process if this is your first time using.

What are the pros and cons of each, and which offers the least restrictions, flexibility and cost savings for my intended purposes?

Quality over quantity. 

Talk to a tax advisor that you trust or know someone personally that has high trust with them.  

This property offers spacious townhouse like setting floor plans offering one, two and three-bedrooms.

Now, moving forward he offered for us to take it over completely.

Are their listings detailed with good-quality photos?