This unique Thomas Cubitt-designed lower ground floor flat combines character, practicality, and charm, offering three spacious double bedrooms, three bathrooms, and a separate guest WC. The property's standout feature is its substantial undeveloped vault space, approximately 260 square feet, which can be accessed directly from the courtyard and offers a rare opportunity for development, whether for a home gym, studio, guest suite, or extended living. This added potential makes the flat not only spacious but also smartly future-proofed, making it an attractive option for those seeking a distinctive and flexible London home.