The apartment was perfect. It looks just like the photos - if not a little bigger. The interiors and artwork made it really special and we found it easy to make ourselves at home there. I stayed here with 3 friends, so I was a little concerned that the description made it sound like both bathrooms were en-suite, but the second bathroom is accessible from the hallway as well as the bedroom, so that made it easy for us to share.
The location is amazing - literally a minute from Plaza Mayor, only 5 minutes from Sol and all the bars & restaurants of La Latina (Cava Baja etc) are a short stroll away. There's a grocery store just around the corner for the essentials.
The air conditioning kept us cool, the noise was less than I expected for central Madrid (I was in the studio and always travel with earplugs) and... I'll say it again... it was just perfect!
I would definitely stay here again and highly recommend it to anyone else who is thinking of visiting Madrid.