To easily manage your expenses would be to run the AirBnb as a business and take the expense deductions on a Schedule C, but this would meaning paying SE taxes.
The other thing that you could do is to manually calculate the expenses that pertain to the rental and enter them after setting up your rental property. During the set up of the property you will come to the page, Let Us Calculate Your Expense Deductions for You - click on No, I'll do the math and enter only the rental-related portion.
The rest of the house deductions can be handled in the Deductions & Credits section.
