Let KAYAK do the searching
Based on KAYAK hotel searches, the most popular destination is San Sebastian (91% of total searches to Costa Guipúzcoa). The next most popular destinations are Bayonne (6%) and Irun (3%). Searches for hotels in Hendaye (1%) are also popular.
KAYAK users have found double rooms in Costa Guipúzcoa for as cheap as £23 (Lezo) in the last 3 days. The average price is £68.