[elbigbad]

Presumably there is a premium for last minute bookings over traditional AirBnB. And there's the factor that, hey, maybe I have a spare room tomorrow and didn't plan on having that, might as well make some money on it.

I've stayed with lots of AirBnB hosts whose "room" is a small guest house in the backyard or detatched from the main house. No problem opening that up because the guests aren't necessarily coming through your normal living space.

I think there's definitely a small market for this kind of thing, but also a small body of hosts with the ability and tolerance to host people last minute.