the market halfway down the ramblas is a eaters paradise………..
if it is lunch try the Boqueria market at top end of the ramblas.
An amazing experience where the locals go to shop for their fruit and veg. At the back there are several stalls/ bars where you can pull up a stool and have a tapas with freshly grilled sardines or whatever takes your fancy.
Seeing as one is repeating the other I’ll join ion, half way down the ramblas is this great market see, the locals all have breakfast lunch and stuff there. It is actually ruddy awesome, the rest of it is just a case of follow your nose, I didn’t have a single bad eating experience there.