Mario's apartment is absoultey lovely! It's so comfortable and relaxing, right in the heart of Madrid, in Plaza Mayor and near Mercado de San Miguel (which we went to many, many times!) and many great restaurants. To one direction is a short walk to the Royal Palace and Templo de Debod, in the other direction the Prado Museum and Retiro Park. My husband and I stayed for a few days on our honeymoon and we couldn't have asked for a better experience. Mario had some great recommendations for both restaurants and activities - and on the last day met back with us to help with our luggage and hail a cab to get us to the airport in plenty of time for our flight. I highly recommend staying here!