Very nice atmosphere, salads on the menu (!!! finally something green and tasty in Spain !!!), not expensive at all. Funky decor, personal service. Had the fried duck's breast as well - very good.
I travel quite a bit by myself and it is always a question how one feels dining in a restaurant by oneself. This was perfect: it felt like being welcomed to someone's home, very personal and friendly - even though I don't speak Spanish.