Erik A.
Yelp
Fantastic mercado experience!
A stone's throw from where I was staying, this mercado fulfilled my expectations and then some.
I was lucky enough to come on a Sunday during the Tapapies cultural festival. There were performers outside, and plenty of activity and great food inside. Each stall had a special "dish" for the festival in addition to their usual offerings. The prices were VERY attractive, almost "happy-hour-ish" where you could get a tapas/beer for 2-3 euro pp. Not bad at all.
I think I spent 2 hours here and maybe spent 15 euro total?
Came back the next day for a repeat lunch - around 11am - and nothing was open except for a butcher stall and two fishmongers. I think some places started opening up around 2pm, but then they were closing an hour later, so very easy to miss some of these places during the early part of the week - if they're even open at all. You'd have better luck for dinner if you came around 7-8pm.
The downside to this is with fewer markets open, those that are open do tend to get crowded, and patrons tend to hang out and take it slow.
TL;DR. Great food, great prices, larger and not as crowded as other Mercados, and not as touristy.