So in other words, someone can rent out a property for a small portion of time on airbnb, while living it in the rest of the time, and yet count everything spent on it as a deductible business expense?
You can’t live in it. Average stay is has to be <7 days.
It makes sense to do if you’re in the 35% bracket. You buy a condo or a house. So you buy a house, airbnb it for one year, then rent for 2-5 more. Then you 1031 exchange it and do it again. If you don’t trade up, you have to keep the property or they recapture the bonus depreciation on a prorata basis later.
Airbnb hasn’t been about couchsurfing in a long time. It’s a mechanism to monetize real estate under more favorable tax rules.