Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Kumamoto (71% of total searches to Kumamoto Prefecture). The next most popular destinations are Minamioguni (16%) and Aso (12%). Searches for hotels in Takamori (1%) are also popular.
KAYAK users have found double rooms in Kumamoto Prefecture for as cheap as $10 (Minamiaso) in the last 3 days. The average price is $138.