It's a nice, cheap, clean place to go to eat desert with a your usual hot drink. Perfect to have your breakfast. And personally I love to eat the croissants that they make (even being a croissant hater), and it's considered as cheap by Barcelona's price standards.
One Saturdays they sell different items than the rest of the week, so you may have something between a breakfast and brunch.
Public - in the last week
reviewed in the last week