Our client required an apartment of 64 sqm with three bedrooms: a master bedroom, one for guests, and one for his daughter who comes home at weekends. The idea was to create a single space, a box that could be repartitioned into other boxes, each of which - apart from the bathroom area - could be adapted to the various needs and activities of the owner thanks to two polycarbonate folding partitions and to flexible and movable household objects (table, divan, bed, and shelves). In this way the space can immediately be adapted to the various needs and circumstances of the client. The materials used - glass, steel, and polycarbonate - were chosen in order to make the setting as diaphanous and light as possible. In this way the house lost not only its physical limits (the walls) but also its functional thresholds; the dining room can become a bedroom, the bedroom an office, the play area a zone for meditation and reflection. The different space-air-light combinations vary with the varying of life programs. Our client required an apartment of 64 sqm with three bedrooms: a master bedroom, one for guests, and one for his daughter who comes home at weekends.