Hi,
Donostia-Hondarribia airport (LESO) is located in the municipality of Hondarribia, 22 kkm from Donostia/San Sebastian. The airport is in the bay of Bidasoa, on an artificial island.
A great basque country freeware scenery by Simzaleak, Aerosoft AES full compatibility, friendly FPS.
http://simzaleak.wixsite.com/simzaleak/hondarribia