Operating a property remotely via AirBnB implies all sorts of risks, which makes me think that it might be an unsustainable model, because a black swan event might ruin the property to such extent that it offsets the income made in all the other cases.
AirBnB handles property promotion and property booking on the Internet -- that's fine -- but when it advertised itself it included in the message ways to do property administration (as in rent-your-home-while-away). While this is not connected intricately with their core business, it is the model that some owners assumed by default, without realizing the risks involved or the fact that you are still exposed to one-in-one-hundred unpleasant events.
If they manage to warn about this upfront similar to the way Craiglist does, without losing their brand and their community support, then owners will become aware of those issues and take the necessary protection (by i.e. requesting guarantees/deposits/passports or by using their social network to validate the guests). If they don't, I'm afraid a couple of bad PR articles will be enough to destroy their reputation.
P.S.: I haven't heard of hotels managed remotely; there are some hotels where you check in automatically and you get the keys via some sort of robot system but in the morning there is someone handling the checkout, the cleaning etc. In addition they have your credit card on file, your passport, probably your cam photo when you picked up the keys and the most you can destroy is a hotel room (still a great deal of value but somehow limited and the hotel probably has insurance for it). But automation didn't pick up at scale in the hotel industry. In the current state, it thrives partially because the reception provides the safety-checks and balances needed to prevent and offset these black swan events. I'm not sure the remote administration model is scalable or even manage-able due to this.