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"
Searching for a place to slow down and breathe in the bustling centre of Barcelona may be challenging, but Bar Cugat provides a solution: a timeless bar situated in Eixample, with an elegant yet low-key atmosphere. While originally stopping in for a quick coffee, we found ourselves returning an hour later for a wonderful dinner. The clean yet eclectic interior (with an Art Nouveau poster to boot) is a great place to dine, any day of the week. Recommendations: classic tapas + vermut.
After being in the market I love going to the beach for a swim in winter there is a magnificient hot/outdoors swimingpool next to the beach were you can swim even if it's rainy!!!
Although i don't like the crowded beach in the summer, i enjoy it very much when the night comes or also during the grey days of the fall/winter. It can be any beach, and it's amazing to be there with friends to drink some beers, have a picnic and it becomes much cooler when i have this gem only 10 min walking from my home.