More plazas
Plaza San Martin is definitely the biggest plaza in Cordoba but you will find smaller plazoletas around the city - like the Plazoleta Jeronimo Luis de Cabrera (the founder of Cordoba) behind the Cathedral.
Another one infront of the Iglesia San Francisco (on the corner of San Jeronimo and Rivadavia) is particularly nice.

San Martin Square
City view from my apartment