Urban-sized service supermarket / grocery store that is located in the underground Galerias Plaza Mayor. With no light from the outside, the place is a little dark and dim and is unlike supermarkets I've shopped in the US and UK. But this is the space they have and they do a decent job with a lot of space dedicated to liquor and packaged goods. Not much for produce or fresh butchery/seafood.
Eroski is a Spanish supermarket chain with nearly 1000 outlets across Spain. It's actually a worker-consumer hybrid cooperative, which is interesting. Reading the wikipedia, I learned that the name Eroski is a combination of the Basque words "erosi" (to buy) and "toki" (place). read more