Tip Nº 01
Book at least one hostel-led pintxos crawl in your first 48 hours — Surfing Etxea's Tue-Sat Gros run or Koba's Wed/Sat run are the highest signal-to-tourist-noise rates. Pay €18-20, get four real pintxos and four drinks, plus the local-bar tipoffs that pay back the rest of the trip.
Tip Nº 02
If sidrería season (January to April) overlaps your trip, ask Albergue Ulia or Cats Hostel to book a transfer to Astigarraga — €35-45 per person for the four-course txuleta-and-cod menu with cider from the barrel. You cannot DIY this without a car and it is the most authentic Basque evening on offer.
Tip Nº 03
For couples or solo travellers who don't want a 1am Old Town crawl, Colo Colo's Friday €12 hostel-cooked dinner is the calm-social alternative — three Basque courses, eaten at the long communal kitchen table, signs you up to your dormmates without a bar setting.
Tip Nº 04
Surfing Etxea's pintxos crawl through Gros is the only one that hits Bar Bergara, Paco Bueno and La Cepa — the three bars Donostia regulars name as the city's actual local pintxos. If you are eating Old Town tourist-window pintxos for two nights, you are doing Donostia wrong.