We just found this apartment to be pretty much perfect in every way! Great location, within easy walking distance of many of Madrid's sights, i.e. Palacio Real, Plaza Mayor, various cathedrals and churches, Parque Del Retiro etc.
There are many shops nearby and Metro station 2 minutes away. Many great eateries nearby, including El Botin.
Marta is an excellent hostess, always very prompt to answer and very informative.
Although the photos in the description are very good, they do not do the apartment justice! It is difficult to capture the familiar, homely feel of a place in a photo. We immediately felt right at home as soon as we walked into this beautiful apartment. It is quiet, no street noise, beautifully decorated and appointed; and located in busy and safe area.
I cannot imagine finding a better place.