Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Hakuba (36% of total searches to Nagano Prefecture). The next most popular destinations are Karuizawa (32%) and Nagano (20%). Searches for hotels in Yamanouchi (11%) are also popular.
KAYAK users have found double rooms in Nagano Prefecture for as cheap as S$ 68 (Karuizawa) in the last 3 days. The average price is S$ 499.