I could not recommend this apartment more. It is clean, stylish, and in an AMAZING location. It is walking distance from the Plaza Mayor, Retiro park, the Prado, Reina Sofia Gallery - any of the main tourist attractions of the city.
This place also has a terrace which is big and a real sun trap! Perfect for catching some rays in the afternoon or playing cards outside if you want to relax with some privacy.
Clara was an amazing host, really attentive and helpful.