Used to be one of my fav bars :) there are 2 locations, both good

The Green Spot isn't just a vegetarian restaurant for non-vegetarians. You will instantly fall in love with its healthy, tasty and colorful food, and for its awesome decoration.

The 3.000 square meters space used to be a parking lot and was transformed into an exquisit palace of food. The venue is divided into four restaurants, each specialised in something else. Meat, fish, tapas & rice, delicatessen. And in the center, four counters specialised in cava, wine, beer and cocktails. There’s even an oyster & champagne bar, for the chic & fancy.

Contemporary Museum

If I had to choose one singular and authentic bar in Barcelona, I'll say "Mendizábal". This is not a fancy bar, and that's what I love of Mendizábal. But it doesn't mean it isn't a cute one with a beautiful decoration and good prices. They have a two very differentiated spaces: one privileged terrace in the city center, and the interior salon. Them both are awesome, and it's perfect because you can decide which one fits better with the situation. They do tapas, sandwich, juices, burgers and veggi burgers. In my opinion, they have the best vegetarian sandwich offer in town. But the most important, you can leave the bar without eating their "patatas bravas"