Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Atami (35% of total searches to Shizuoka Prefecture). The next most popular destinations are Shizuoka (30%) and Izu (21%). Searches for hotels in Gotemba (15%) are also popular.
KAYAK users have found double rooms in Shizuoka Prefecture for as cheap as $30 (Kakegawa) in the last 3 days. The average price is $135.