Timeshare in a different state

I received a 1098 for a Hilton Properties timeshare that is located in Florida purchased in 2023 & for the home I own in California (where I live & work); do I get to deduct the mortgage interest on both for my federal returns? Do I have to file with both Florida & California?  I also purchased a new home in CA that is my new primary residence - can I also deduct these closing costs? ( I didn't make any mortgage payments outside of closing costs until 2024)