Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is San Sebastian (87% of total searches to Costa Guipúzcoa). The next most popular destinations are Hondarribia (6%) and Bayonne (5%). Searches for hotels in Irun (2%) are also popular.
KAYAK users have found double rooms in Costa Guipúzcoa for as cheap as $24 (San Sebastian) in the last 3 days. The average price is $303.