Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is Santander (73% of total searches to Cantabria). The next most popular destinations are Cubas (10%) and Mogro (10%). Searches for hotels in Castro-Urdiales (8%) are also popular.
KAYAK users have found double rooms in Cantabria for as cheap as C$ 45 (Santander) in the last 3 days. The average price is C$ 188.