Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Yamagata (38% of total searches to Yamagata Prefecture). The next most popular destinations are Tendō (25%) and Obanazawa (25%). Searches for hotels in Sakata (13%) are also popular.
KAYAK users have found double rooms in Yamagata Prefecture for as cheap as $60 (Yamagata) in the last 3 days. The average price is $222.