My girlfriend and I had the pleasure of staying at Marta's place during our time in Madrid. We couldn't have asked for a better location for all the sight-seeing we did. We were able to walk to Retiro Park, to the Templo de Debod, and everything in between. The description and photos were accurate as well. As some other people have mentioned, there is some late night street noise, but that's expected when staying in the center of the city. I would recommend Marta's place to anyone who wants to see all of Madrid on foot.