Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Santander (50% of total searches to Cantabria Coast). The next most popular destinations are Comillas (25%) and Limpias (13%). Searches for hotels in Santillana del Mar (13%) are also popular.
KAYAK users have found double rooms in Cantabria Coast for as cheap as $39 (Santander) in the last 3 days. The average price is $222.