The Humuhumu Room was a teeny, tiny little enclave -- only 7' by 9', with lowish ceilings. It was the home bar of Humuhumu (Michelle), creator of Critiki and Ooga-Mooga.
There was a whole lot of stuff in the space: a bar with a sink & small refrigerator, a fountain, seating for five or six, and three almost-life-size palm trees. The most people Humu ever had in the Humuhumu Room was ten full-sized adults, not counting her behind the bar.
The Hawai'ian word for sewing is "humuhumu"; the Humuhumu Room also doubled as Humu's sewing room. Her vintage fold-up sewing machine table served as the central cocktail table. The room's name became Humu's own nickname, and it has stuck ever since.
The Humuhumu Room closed in February 2003, when Humu moved out of the house it was built in. She currently resides in San Francisco and has a newer home tiki bar, Balhi Ha'i, which made its debut in 2011.