We loved the apartment, the locations was great, walking distance to the historic district, Barrio de Santa Cruz, Plaza de España and Parque de Maria Luisa. I stayed with a group of students and everyone liked it very much. The apartment was spotless, and was very comfortable. Nicolas provided us with all the info we might need, and he was available (and responded quickly) if we needed anything. If you are bringing big suitcases, you should know there is no elevator, but that wasn’t a problem for us at all.
Thanks for everything Nicolas!