For anyone looking for a good beer in Donostia / San Sebastián try
Mala Gissona, Zabaleta Kalea 53, a block off the Zurriola beach in the Gros area. They brew their own and also have a number of guests on tap. 12 taps pouring during my visit with a coming soon list that included Thornbridge. Huge bottle selection including their own and the likes of Kernal from London. Between €3.50 & €5 for pints. Malagissona.beer
Picachilla Taberna Naútica is across the road from Kursaal on Zurriola Hiribidea. Decent range of bottles from local breweries, the also had Brooklyn, Sam Smiths and others, around €3.50 for 330ml.
Good pintxos in both places.