Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Nikkō (84% of total searches to Tochigi Prefecture). The next most popular destinations are Utsunomiya (11%) and Nasu (3%). Searches for hotels in Ashikaga (2%) are also popular.
KAYAK users have found double rooms in Tochigi Prefecture for as cheap as $17 (Nikkō) in the last 3 days. The average price is $137.