The Peterson Room & Garden at the Asian Art Museum is a nice space for 30 seated diners. You can have food prepared by the museum’s Cafe Asia or have it catered. The dotcom boom has spurred a robust catering industry hereabouts. I can personally recommend a Malaysian or a Peruvian option.
http://rentals.asianart.org/weddings-private-events/
M.Y. China has a room for up to 64 diners. I don’t think there is a fee, just a minimum commitment. . Perhaps you could snag it for a smaller group on a Monday night.
http://www.tastemychina.com/sites/default/files/pdfs/myc_infopack.pdf
