@Adam Walker check to see if they have other properties they do this for and ask for those landlords' contact info like you would with other tenants. If they haven't done it before, the risk is definitely higher. If they have references and those landlords are generally "happy" with the experience, then its a good operator. Your home IS in a location that could make it a good STR/MTR given proximity to attractions and it's in beautiful shape so I don't think the operator is pulling the interest/opportunity out of their a**.
Attorneys would probably argue with me, but if their LLC is going to rent it, I would still get the individual on the lease or at least a co-signor guarantor agreement so that you have the EIN and SSN for purposes of evictions and collections.
I'd say the biggest qualifier (assuming they can operate it well) is their credit score. If they have a 500 credit score and are trying to make a buck a popular investment strategy, they could just as easy shut down the LLC, stop paying you rent and jump ship since their credit is already bad, whats another hit. Low risk, high reward for them.I would also consider getting a 2x security deposit + 1st months' rent + last months' rent. Don't go more than 12m lease, and even consider a 6m to test the waters, though they will push back because it doesn't given them enough runway to buy the furniture and get runway.
If your PM is going to be managing them, make sure that they are just VERY diligent on collecting timely rent and get agreement to do quarterly (or so) walkthroughs/inspections to make sure the home truly is being maintained. In addition, get GRANULAR on which expenses/costs are tenant responsibility vs which stay with you. Who does HVAC maintenance? What happens if shower pressure deteriorates dramatically - are you on the hook for the plumber or them? Water heater? Appliances? Etc....everything should be very detailed/itemized and hyper documented.