Renter placed my property on airbnb

[Kendall Moore]

Hi I have a multi-family2 unit property in Houston, Tx . Not sure what or if I should do anything. I use one side for an airbnb myself. I rent the other unit out. I have a renter, the gentleman that was listed is in his 70s. I thought it was strange for a 70 year man to want a 3 bedroom 2 bath unit with all of the bathroom being on the second floor. I rented the place to him because he met the requirement for the rental income. I have since notice that he had not once visit the property (a younger couple comes by) and I now see the unit listed on airbnb. In the lease agreement it states the property is to be use for personal use by the renter only. I will say that the unit I placed on airbnb does not make more than what I could rent the unit. I am concern that my unit will have to compete for listing on airbnb with a unit I plan to rent out. Should I say anything to the renter or just let it be as long as they pay the rent every month. I plan to stop airbnb my unit next soon and likely will rent it out.