All my listings are for "Private Room", not "Entire House". The difficulty is large groups search for a "Private Room" and then seem to expect multiple BR's fro the price of one. I have tried to prevent this in the future by limiting the MAXIMUM number of guests in a "Private Room" to x4.
SXSW is the premier short term stay period in AusTex so I try to get a variety of folks into the man cave and attempt to keep them happy. The group on air mattresses in the living room one night knew up front they would be sleeping on the floor and hence brought sleeping bags. There were actually x7 guests in that party.
I have to continually ask, what are large groups (>4 people) expecting for about $50/night? If togetherness is an issue then go get 2-3 hotel rooms at peak rates and pay several hundred dollars for a night's stay. OR look for "Entire House" listings on airBNB and pay a similar amount during peak times.