I would like to share some recommendations and anti-recommendations with you in Barcelona.
Recs:
3 Focs
https://maps.app.goo.gl/KUeBijoKyzmEytY88
Had their set lunch menu for less than 15 Eur. Awesome food and service. Convenient location.
Can Cargolet
https://maps.app.goo.gl/XiPoWLfJZRgVwddf9
A neighborhood gem!!! Their most famous dish is snails. I know the idea of eating snails is not appealing to some, but this is a true delicacy. Very popular with locals.
Casa Dorita
https://maps.app.goo.gl/qTg6Ak3XbjMbEteY9
Another gem and popular with locals! Don't miss their jamon.
Anti-recs:
Restaurant Can Boneta Aribau
Carrer d'Aribau, 212, Bajos, Distrito de Sarrià-Sant Gervasi, 08006 Barcelona, Spain
https://maps.app.goo.gl/jc3dmaX8Rm6Q3dv47
The staff was friendly but I got severe food poisoning for six days afterwards. I arrived home yesterday at 2am but spent the same afternoon in the ER, needing IV.