Going to be back in Madrid this March and planning to hit up as many old bars as I can (I know tgere are lots of great new ones, but here in Toronto, a bar that's 20 years old is ancient). So far I've been to Casa Alberto and El Abuelo. Planning to visit Antonio Sanchez, La Ardosa andCasa Labra on this trip.
Any other must sees? Are these bars any good?
I'd love an expert opinion.