we enjoyed our week stay at Sandy's. The location is close to everything in the center of Madrid. we walked from the Atocha train station (30 min with luggage), took a cab to the airport from the nearby taxi stand (20 min at morning rush), walked everywhere during our stay to the Retiro park, to the royal palace, to plaza mayor and the mercado, to the Carolla museum (a favorite, and free) to Puerto sol for the local train to El Escorial. The area is full of restaurants.
the apartment itself is easily accessed, is represented by the photos, the kitchen is galley-sized but functional with stove microwave, dishwasher and ample refrigerator and separate freezer. The bed is a full queen size bed we appreciated, the hot water was on demand and great (we had hot water lapses in our previous places in Spain). For a couple coming for a weekend or longer trip to see Madrid, this is a nice home base.