Gustavo's penthouse was a real highlight for us when traveling in northern Spain in September. We only had one night in San Sebastian, which was a mistake because the city is SO beautiful, and the penthouse was in a perfect location. We were able to walk to the beaches and the sights/restaurants/old neighborhood and then come back to a private and quiet rooftop terrace with lovely sights of the city. The apartment has a lot of light and makes great use of the space... and an elevator, which was a relief considering we packed much too heavy bags. The seafood/pintxos were just amazing, some of the best we had on our trip, and the wind/salt air/breezes coming off the Atlantic ocean were so refreshing, I am dreaming of them right now. We will definitely return and would love to stay again.