The flat is in an excellent location, within walking distance to Retiro Park, Plaza Santa Ana, Plaza Mayor, Atocha Station.. neither of us had been to Madrid before and Cortes was the perfect neighbourhood from which to explore the city.
The flat itself is spotlessly clean, although a lot darker than it looks in the photo. There are no windows other than the balcony doors so a fan would have been great to make it a bit more comfortable at night but other than that we felt we got what we paid for and would recommend it to others.