This very nice facility is on site and convenient and has all the amenities of a high class hotel (see their website for details). We have a block reservation under the group code "0712LARP" that gaurantees space up to June 7, 2012. Rooms may be available after that date; you may call and check.
To reserve call the front desk, 24 hours a day, at 650-926-2800 or book online.
Many hotel options are available. Your best bet is to consult one of the many travel search engines. SLAC maintains the following linked list off off site hotels.