First of all,Thanks Pedro! We had a great trip!
The place was in the perfect location for everything we wanted to see! The apartment is about a 10 minute walk to atocha train station, 15 minute walk to Retiro Park, and 15 minute walk to puerto del sol. We loved its central location!
The apartment is small, but it was perfect for the two of us. It was also great that the place had AC and a washing machine.
As others have stated, it is a hike up the stairs to his apartment, I do not recommend if you plan on having a lot of luggage.
Also FYI if you need to print anything out there is an Internet cafe right at the corner —less than a minute away (thanks Pedro for helping us find that).