Casual Mexican spot with standout tacos, ceviche, strong cocktails, and warm service; some reports of inconsistency and slow service mean results can vary.
Zero 20 Barcelona delivers solid neighborhood dining with strong food quality highlighted by standout Baja fish tacos and ceviche, paired with genuinely attentive service that guests remember by name. However, inconsistent execution—ranging from fresh, satisfying plates to cold or bland dishes—prevents grade A territory, while moderate review authenticity concerns create some uncertainty in assessment reliability. Worth visiting for casual Mexican dining near Montjuïc, though not a citywide destination.
One caveat: Inconsistent temperatures and seasoning reported by a minority of diners