Very good and safe location, during our visit we could go everywhere by walk (the Prado is 10 minutes). The room hasn't got a window for the street (only for the small courtyard), but it wasn't a problem, because the street is a walkin street and noisy (but its's nice with the small bars :) so we could sleep very well. The kitchen and the bathroom has everything what is necessary during a long-weekend, the bed was comfortable. We didn't meet Mari Paz, but she was nice and we could discuss by mail that we could left our luggages till the evening (on our check-out day) there.
I can recommend this apartment! Enjoy your stay there :)