Specializing in San Sebastián's favorite dishes, this Basque restaurant has only one drawback—a table is hard to score unless you call weeks in advance (an idea to consider before you travel). Your backup plan? The tapas served over the first-come, first-served bar: They're of such a high quality, you can barely do better à table. And the charming family that owns and runs this gem is the very definition of hospitality.
Valencia 169, Barcelona, Catalonia, 08009, Spain