I met one once. Because he was renting out the bottom floor of his townhouse in DC, so he was on site anyway. Nice place, mostly, with rave reviews. Complimentary candy, soda, and even beer when we arrived (late at night after a long flight, so the snacks were very welcome. But holy crap the bed was awful. Hard as a rock, firmest mattress I've ever tried to sleep on. Ended up sleeping on the couch. And the power kept failing each day we were there, though that seemed to be a neighborhood thing, not specific to his apartment. Just bad luck.
I'm back to hotels because that was the closest I came to having the quintessential perfect AirBnB experience. Any halfway decent hotel has better service, better beds, better climate control, better everything pretty much.