It depends. If you charge the Fair Market Rent for your condo, you would report this activity under Rental and Royalty Properties. See Where do I enter income and expenses from a rental property?
But if you charge less than Fair Market Rent, the IRS considers this a not-for-profit activity. In this case, the property is considered a "second home" and you may report property taxes on Schedule A.
Use this link to Lookup Fair Market Rent for your location.