Lillian Y.
Yelp
We walked by this patisserie our first day in San Sebastian, had a cafe con leche and croissant, and were instantly hooked. The croissants are some of the best I've ever had - perfectly flaky, perfect circular layers in the cross-section, and the chocolate croissant is amazing. The extra touch of dipping the ends in high-quality chocolate create a perfect ratio of chocolate to croissant (for this chocoholic). If you are sitting outside, the chocolate will even become a bit melty as you nibble. Amazing.
Their English isn't great, but you can get by with pointing at anything that looks good. Some pastries were too sweet and rich for me, but the croissants never failed. It was even worth grabbing one to eat on our hike up Mount Urgull, leaving a little trail of flaky crumbs.