In the most emblematic street of the Jeronimos, and just 100m from the entrance to Retiro Park, we find a unique property in the luxury real estate market of Madrid. The property is a duplex of 400sqm with 12 windows on the street. It is almost impossible to find such an outdoor space in Madrid for a home. The apartment, with access from the portal and the garage entrance, is divided into: upper floor with a large bright living room, dining room, courtesy toilet, modern kitchen equipped with the best appliances, office and garage with direct access to kitchen and living room; and ground floor with three children's bedrooms with two complete bathrooms, service area, an office and the jewel of the house, a single master bedroom with the walls of the original brick of Casón del Buen Retiro and the Salón del Reino, which has a living room, dressing room, large bathroom and views to a landscaped courtyard.The property has been refurbished with the maximum qualities in exterior and interior carpentry, individual gas heating installations by radiators and air conditioning by ducts in all the rooms, the materials of kitchen and bathrooms and the electrical installation. Great care has also been taken to preserve some of the original elements of the building, such as the granite pillars, the vaulted ceilings of some rooms, and the original brick found in some walls.The building, from the beginning of the 20th century, has a concierge service and elevator.The property is rented unfurnished.