Just happened to me as well. Absolute rubbish. This dude cancelled mine and everyone else's bookings 2 days before my flight. Because the booking was over super-peak period and for 8 nights, it's been hell trying to find a decently priced accommodation at such short notice. Here is his sob story: "We are very sorry that we have to cancel your reservation as we now have legal problem with the house rent. We were inspected by police for illegal house rent to tourists. Honestly, we have been caught 2 times before for illegal rent to tourists and this morning we were caught for 3rd time.
So, the house is being closed by police now and we cannot accommodate you anymore.
If we rent house, we will be jailed... hope you may understand our situation...
We don't know how to say sorry about the cancellation and hope you can quickly find another place for your stay in seoul... so so sorry...
Regards,
Kate and Jason"
I'm half decided to expose his full details online - but I need to cool down first!
AirBnB had better find some better way for poor users to flag rotten apples and receive feedback... but this will be my last time on such a rubbish service.