Yes, it is considered rental property.  You must divide your expenses between rental use and personal use. In general, your rental expenses will be no more than your total expenses multiplied by a fraction; the denominator of which is the total number of days the dwelling unit is used and the numerator of which is the total number of days actually rented at a fair rental price. 

Only your rental expenses may be deducted on Schedule E (Form 1040). Some of your personal expenses may be deductible on Schedule A (Form 1040) if you itemize your deductions.

https://www.irs.gov/publications/p527