There are Rules for Rental Property 7 days or less

If you own a condominium, cottage, cabin, lake or beach home, ski lodge, or similar property that you rent for an “average” rental period of seven days or less for the year, you have a property with unique tax attributes. 

Seven days example. Say you have a beach home and you rent it 15 times during the year, for a total of 85 days. Your average rental is 5.7 days. That’s an average of seven days or less for the year.
 
The right type of beach home or vacation cottage can produce great tax results when the average rental period is seven days or less. But it’s tricky because when the average rental period is seven days or less, the property is not a rental property as defined by the tax code. Instead, the property is a commercial hotel type property that you report on Schedule C of your tax return if you provide services in connection with the rentals, or a weird in-limbo property that you report on Schedule E when you don’t provide services.

If you have a profit on the rental you likely will qualify for the 20% deduction, depending on your filing strategy.
If your seven-days-or-less beach rental property produces a $20,000 tax loss for the year, you can deduct that loss only if you can prove that you materially participate. With the seven-days-or-less-average rental, you likely have only two ways to materially participate. 

Questions?