Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Fujikawaguchiko (100% of total searches to Yamanashi Prefecture).
KAYAK users have found double rooms in Yamanashi Prefecture for as cheap as 120 ﷼ (Fujikawaguchiko) in the last 3 days. The average price is 1,428 ﷼.