We present this exclusive duplex with 8 rooms and 395 sqm of gross area, located in the prestigious Avenidas Novas, one of the most central and highly valued areas of Lisbon. Set in a concrete building with only one apartment per floor, this property offers a high level of privacy, security, and distinction. Its main added value lies in the extraordinary flexibility of space usage. Distributed over two floors, it allows for different configurations adapted to various lifestyles. One floor may be dedicated to social and work areas — including living room, leisure spaces, office, and kitchen — while the other floor can be reserved for private use, with bedrooms, study areas, family room, and laundry/storage space. Alternatively, it easily adapts to a differentiated family lifestyle, allowing the creation of an independent floor for parents and another for children, ensuring both functionality and comfort through well-distributed support areas. With generously sized areas and multiple living, sleeping, and working spaces, this duplex stands out for its rare versatility, ideal for large families or for those who value combining residential living with professional activity. The east-west orientation ensures excellent natural light throughout the day, enhancing every room. It also includes five parking spaces and a storage room — a significant advantage in such a central location. The property has two independent land registry certificates, reinforcing its potential for independent use or as an investment with different strategies. Surrounded by a wide range of shops, services, schools, and excellent access, this is a rare property on the market that combines premium location, exceptional size, and unique adaptability. A solid opportunity to live, adapt, or invest in one of Lisbon’s most iconic areas.