Changing the original narrowed floor plan, the designer knocked through and combined two individual spaces. Taking “cloister” as the main visual concept of the space, all sides of the floors, ceilings and walls are applied with reflective materials such as mirrors and glasses. For instance, the mirror material used beneath the ceiling creates an illusion of duplex apartment arrangement. In addition, big sized windows installation, allows them to enjoy the outdoor view anytime anywhere, introducing natural lighting inside and extending it by the translucent/transparent/reflective materials.