It is my understanding that the interest on the loan is deductible. However, there are certain criteria that need to be met. I would ask a tax advisor to be sure.
A portion of the dues can supposedly be deducted, as well. (real estate taxes portion)
DW and I live in NJ. for the past 4 years we have deducted all the interest (financed thru disney) and part of the annual dues (tax portion) on our federal taxes. We use an accountant so I would assume he is right. There are rules allowing for deductibility, I would check with your tax advisor.