Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Saitama (58% of total searches to Saitama Prefecture). The next most popular destinations are Kawagoe (22%) and Kawaguchi (11%). Searches for hotels in Chichibu (9%) are also popular.
KAYAK users have found double rooms in Saitama Prefecture for as cheap as $34 (Tokorozawa) in the last 3 days. The average price is $80.