The apartment is in a very good location, right in the shopping and major attractions of Madrid. Everything was within walking distance, whether shopping or dining. It was also very near grocery stores, and was 5mins away from the bus station going to the airport.
It is as advertised, and you have everything you need, most especially the aircon which was necessary during our visit (in August).
Mar is easy to coordinate with, and replies to messages quickly. Highly recommended.