Bentheim, in coordination with Diego Trolliet have designed this super-stylish residential project in London’s exclusive The Little Boltons. The design burrows down to create a swimming pool and gym. cleverly lit by glass roof lights and transparent floors to the family room above. Each floor has been reformed around a swooping curving staircase. The detailing is of the highest quality with a creative use of wood and marble set against silk and linen fabrics. Photographs Adrian Woolfson.