Hi Corinne, I happen to live in Dallas haha! Anyway I was just researching this. It looks like Airbnb can automatically collect and pay the required tax for you:
https://www.airbnb.com/help/article/2326/occupancy-tax-collection-and-remittance-by-airbnb-in-puerto...
On a side note, there is evidently also a Hacienda Dept that collects an IVU tax, but supposedly if you register with the Tourism Department with an NAICS code of 721199 you will be exempted because you are only providing lodging, not food service, etc. I assume if Airbnb is paying the tax to the Tourism Dept. that they automatically register you this way.