This unique Thomas Cubitt designed lower ground floor flat offers a perfect blend of character, practicality, and charm, with three double bedrooms, three bathrooms, and a separate guest WC. The property's standout feature is the substantial undeveloped vault space, accessible from the main courtyard, which provides a rare opportunity for development (STPP) into a home gym, studio, guest suite, or extended living area. This added potential makes the flat not only spacious but also smartly future-proof, with growing demand for creative lower ground conversions.