Renting to tenant to manage an AirBNB in the property?

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So we are not exactly newbies but not veterans either - we have 3 rentals and 2 flips right now. We attend an REIA where another member has inquired about renting properties from us - he would sign a lease, pay market rent, etc but he would be using it to run exclusively as an AirBNB. He rents rooms out of his own house he lives in on Airbnb, and wants to add more properties to rent. I'm intrigued with the idea, as I'm not really seeing a downside for us. Am I missing something I should be aware of with something like this?