I've stayed with Airbnb once as a large group, but as a terminal cheapskate I always check to see if they have a good deal available. I
almost stayed at one in Memphis, then checked the Google street view and realized it was a shack, and a recent review mentioned that there wasn't a functioning toilet on the property.
I've stayed with a couple small competitors to Airbnb, though. Mint House was a good one, with solid rates and a nice living space.
I'll be trying Vrbo for my bachelor party next month.