Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Morioka (50% of total searches to Iwate Prefecture). The next most popular destinations are Hanamaki (19%) and Ichinoseki (19%). Searches for hotels in Kitakami (13%) are also popular.
KAYAK users have found double rooms in Iwate Prefecture for as cheap as £28 (Morioka) in the last 3 days. The average price is £42.