An absolutely beautiful apartment in the Center of the City Center...! The location could not be better, as the living room looks directly into Plaza Mayor. The apartment is extremely clean and inviting - and feels like a home. The kitchen is very cool, being a glass enclosure with views of the side streets.
The apartment is very well insulated from noise - being that you are in the City Center, you will still hear the sounds of the street outside. However, I slept with the windows open because I enjoy the sounds of the city, and it was too quiet with the windows closed.
Next door is a Cafe owned by the owner of the apartment, with amazing food, and they will hold your luggage for you until check-in time. This proved to be very helpful when I arrived early in the morning.
If you are looking for a very central home-base for Madrid - look no further...!