Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Bilbao (52% of total searches to Bay of Biscay). The next most popular destinations are La Rochelle (20%) and San Sebastian (20%). Searches for hotels in Saint-Martin-de-Ré (8%) are also popular.
KAYAK users have found double rooms in Bay of Biscay for as cheap as $32 (Llanes) in the last 3 days. The average price is $283.