Hmm looks like a lot of work for relatively little in savings [1]. As a guest I'd rather avoid it and pay the premium for the convenience of a traditional hotel [2]: you just walk in and book a room. I recognize that making friends is claimed as the other benefit of using Airbnb, but I doubt that ever had as much broad appeal as the promise of saving money.

[1] - And even with this much work, there are still substantial risks, for both the host and the guest.

[2] - The only exception might be extended stays of weeks/months.