We came here twice during our recent visit to Cádiz... first at the suggestion of our Air BnB host,…read moreand second, because the first time was JUST SO GOOD!
I agree with several of the other reviewers that getting tapas at the bar is the way to go here - and even if you want a full-blown meal, getting it at the bar will save considerable Euros from your bill, and service is a lot quicker. That said, this place is VERY popular among the locals, and so you may have to wait awhile if you go during the lunch rush-hour of 2 - 3 pm.
We'd been told that this place is known for its tuna dishes, and in all honesty, that's a good thing to be known for in this end of Spain. They do it proud! They use sushi-grade tuna and will serve it as rare as you like (Tuna Tartare) to fully cooked. IMHO, their tuna is better on the rare side. The other meals we had there (my wife's favorite goat-cheese salad, and a lasagna de ternera) were also quite good, but - when a restaurant in tuna country is known for its tuna, order the tuna!
Buen provecho!