Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Aizuwakamatsu (44% of total searches to Fukushima Prefecture). The next most popular destinations are Fukushima (30%) and Kōriyama (16%). Searches for hotels in Iwaki (10%) are also popular.
KAYAK users have found double rooms in Fukushima Prefecture for as cheap as $30 (Iwaki) in the last 3 days. The average price is $100.