The Workshop will be held on the Caltech Campus, in Keck 111. For a map of Caltech please see here. For parking options, please see here. Participants' travel, lodging, and food expenses will be paid by the host.
Numerous hotels serve the Pasadena area. Please see here and here for listings. Ask for "government rate".
Closest airports serving the area are the Bob Hope Airport in Burbank, (BUR, closest), and Los Angeles International (LAX, farther). Transportation to/from local airports to Pasadena hotels is provided by several commercial transportation companies; please check the airport web sites above or inquire upon arrival after clearing the customs/baggage claim area.