If you are not renting out then there is no federal tax filing to do as you are not generating an income.
If however you do rent out then you will need to get a tax accountant / CPA then once that is done you will need to apply for an ITIN number(individual Tax identification number) each owner named on the deeds will need an ITIN number as each of them will need to file a federal tax return.
You will also need to apply for a rental licence from DBPR this will also register you to pay state sales tax.
You will also need to register with the county once you have received your state licence number to pay the county tourist development tax and also pay for and get a county business receipt, both your state and county licences need to be displayed n the villa.
You will also need to file a tangible property tax return every couple of years which your tax accountant will be and charge you for doing so.
You then have the yearly property tax which is like the UK council tax but it is payable in a lump sum, if paid straight away you get a discount which goes on a sliding scale from November to March if not paid until March you pay the full amount of the assessment.
On closing you don't pay sales tax you and the current owner pay any outstanding property tax unless as a condition of the sale another arrangement has been put in place.
This is a good guide to tax obligations
polktaxes/forms/Cent...ationGuide.pdf
Hope that helps
Steve