Some programs may accept 2-4 unit owner-occupied dwellings. Your situation sounds very unique and would probably be best answered by a qualified broker.NewRetirement can connect you to a prescreened lender here:https://www.newretirement.com/Services/Reverse_Mortgage_Advice.aspx
How is the Motel "Titled"? And how is the parcel zoned? Is Title held as "fee simple"? Or "commercial"? Is the land zoned for "residential"? Or "commercial"?