I was in Madrid literally 24 hours, and needed a place close to transportation that would be convenient, and from where I could quickly swing by some of the sights. Arnaldo’s place met all my needs. Close to Atocha station, I was able to come in from Toledo and literally walk to the apartment. You can walk almost anywhere (and I did) from El Retiro to the Prado. The place is clean, with all the basic necessities. When it came time to heading to the airport, I just walked back to Atocha and grabbed the express bus (204 Aeropuerto Expres), which only took half an hour. Thanks, Arnaldo!