Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Iwakuni (60% of total searches to Yamaguchi Prefecture). The next most popular destinations are Yamaguchi (18%) and Shimonoseki (18%). Searches for hotels in Hagi (4%) are also popular.
KAYAK users have found double rooms in Yamaguchi Prefecture for as cheap as $42 (Hōfu) in the last 3 days. The average price is $87.