Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Morioka (56% of total searches to Iwate Prefecture). The next most popular destinations are Kamaishi (17%) and Ichinoseki (17%). Searches for hotels in Kitakami (11%) are also popular.
KAYAK users have found double rooms in Iwate Prefecture for as cheap as $54 (Kitakami) in the last 3 days. The average price is $146.