Arriving flights can come into either Oakland International Airport or San Francisco International Airport.  Both airports have rental car facilities.  

A block of rooms have been saved
at the Mill Valley Inn and at Acqua hotel

Mention you are a guest of the King Bat & Bar Mitzvah for special pricing

Mill Valley Inn - 165 Throckmorton Avenue, Mill Valley, 94941   415.389.6608 (walking distance to venues)

     http://www.marinhotels.com/mill-valley-inn/home

Acqua Hotel - 555 Redwood Highway, Mill Valley, 94941   415.380.0400 (10 minute drive to venues)

     http://www.marinhotels.com/acqua-hotel/home

Additional lodging:

The Lodge at Tiburon - 1651 Tiburon Boulevard, Tiburon, 94920 415.435.3133 (Great location in downtown Tiburon with access to the ferry into the City, but accommodations are lacking.  There is a great indoor/outdoor restaurant & bar with good food.  15 minutes to venues)

    http://lodgeattiburon.com

Casa Madrona Hotel & Spa - 801 Bridgeway, Sausalito, 94965   800.288.0502 (20 minute drive to venues)

     http://casamadrona.com/hotel/spa/

Cavallo Point - 601 Murray Circle, Sausalito, 94965   415.339.4700 (20 minute drive to venues)

     http://www.cavallopoint.com

Four Points Sheraton ... A Starwood Property - 1010 Northgate Drive, San Rafael, CA  94903 (17 minute drive to venues)

     http://www.starwoodhotels.com/fourpoints/property/overview/index.html?language=en_US&propertyID=1260

Best Western Corte Madera Inn - 56 Madera Boulevard, Corte Madera, 94925 (10 minute drive to venues)

    www.bestwestern.com

Embassy Suites by Hilton San Rafael - 101 MClnnis Parkway, San Rafael 94903   415.499.9222 (20 minute drive to venues)

     http://www.hilton.com/search/es/us/ca/san_rafael?wt.srch=1

AirBNB - Nearby locations would be Mill valley, sausalito, tiburon, larkspur, corte madera, kentfield, ross 

PROXIMITY FROM THE 101 FREEWAY & MILL VALLEY/TIBURON TO THE GOLDEN GATE BRIDGE IS 6 MINUTES