Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is San Jose (39% of total searches to Silicon Valley). The next most popular destinations are Burlingame (35%) and Foster City (13%). Searches for hotels in Fremont (13%) are also popular.
KAYAK users have found double rooms in Silicon Valley for as cheap as $113 (Fremont) in the last 3 days. The average price is $301.
In the last 72 hours, users have found Silicon Valley hotels for tonight for as low as $429 (Mountain View).