Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is San Sebastian (95% of total searches to Costa Guipúzcoa). The next most popular destinations are Bayonne (4%) and Hendaye (1%). Searches for hotels in Irun (1%) are also popular.
KAYAK users have found double rooms in Costa Guipúzcoa for as cheap as $42 (San Sebastian) in the last 3 days. The average price is $611.