Gaztelagun Donostia is located on Errotaburu Pasealekua, in Donostia-San Sebastián, capital of the Basque province of Gipuzkoa. The city is known for La Concha Bay, considered one of Europe's most elegant urban beaches, lined by an iconic promenade.
San Sebastián is also renowned for its gastronomy, home to one of the highest concentrations of Michelin stars in the world, and for the pintxo bars of the Parte Vieja old quarter. Mount Igueldo and Mount Urgull frame the bay and offer viewpoints over the city.