Developer Days 2010 Conference Venue:

HP Labs
1501 Page Mill Rd,
Palo Alto, CA 94304
(650) 857-1501

Some hotel options.

Creekside Inn

3400 El Camino Real,
Palo Alto, CA 94306
Phone: (650) 493-2411‎
http://www.creekside-inn.com/?chebs=gl_crksi

Crowne Plaza Hotel, Palo Alto

4290 EL CAMINO REAL
PALO ALTO, CA 94306 UNITED STATES
Hotel Front Desk: 1-650-857-0787
Hotel Fax: 1-650-4961939
http://www.ichotelsgroup.com/h/d/cp/1/en/hotel/sfoca/transportation?start=1

Courtyard Palo Alto Los Alto

4320 El Camino Real
Los Altos, California 94022 USA
Phone:  1-650-941-9900
Fax:  1-650-941-2866
http://www.marriott.com/hotels/travel/paocy-courtyard-palo-alto-los-altos/