We present a magnificent 240 m² property, located on the prestigious Avenida Diagonal. This architectural gem from 1930, located on a royal fifth floor with an elevator and with the exclusivity of a single apartment per floor, offers an exceptional opportunity to design the home of your dreams. With 7 bedrooms, 2 bathrooms and large spaces flooded with natural light thanks to its south orientation, this property stands out for its potential to become a unique home. Its reinforced concrete structure, together with the absence of load-bearing walls, allows total flexibility to renovate and create open and modern spaces, adapted to any need or style. The privileged location in the heart of the Eixample, a few steps from Paseo de Gracia and surrounded by services, shops and excellent transport links, adds incalculable value to this property. A unique opportunity for those looking for a secure investment and an architectural project full of possibilities.