This remarkable penthouse-duplex in the sought-after Retiro – Ibiza neighbourhood offers an unparalleled blend of historic charm and contemporary refinement. Spanning 428 m² (with 258 m² of interior space and a 170 m² terrace), this unique home has been fully renovated and elegantly furnished, providing a sophisticated living experience in one of Madrid's most desirable areas. Currently, the construction is at approximately 30%.The residence features three spacious bedrooms, each with its own en-suite bathroom, ensuring privacy and comfort. Additionally, there are two guest toilets, enhancing the functionality of the layout. Originally constructed in 1926, the property retains its classic architectural character while incorporating modern finishes and high-quality materials.The expansive living and dining area seamlessly integrates with the terrace, creating an exceptional indoor-outdoor flow. The generous outdoor space is ideal for relaxing, entertaining, or enjoying the city views. Equipped with air conditioning and individual heating, the home guarantees a pleasant atmosphere throughout the year.The building offers a concierge service, adding an extra layer of convenience to this distinguished property. This is an outstanding opportunity to acquire an exquisite penthouse in a prime location, combining elegance, comfort, and timeless appeal.