The best thing about Mari Paz's place is its location; it is within walking distance (8-10 mins) of three major art museums (Prado, Reina Sofia, Thyssen-Bornemisza) as well as Park Retiro and Plaza Mayor (about 15 min walk). It is on a lively street that feels very safe even at night, but the bedroom is far back enough that the street noise didn't bother us. The neighborhood is close to tourist attractions but felt very local as well, with eclectic bars and restaurants. The apartment itself is clean and tidy and has everything you should need for a couple of days. The bedroom is definitely a bit of a tight squeeze and does not have its own door (the apartment is kind of like a large studio), but again, that was no issue for us. Mari Paz's friend was also able to help us check in early, which was greatly appreciated. Would stay here again.