An unique almost square large space, with the only one view on the large private courtyard, three windows locate as many aisles, scan by the powerful presence of two gnarled oak beams. These are the elements that engender the project. Determining design choices was the need to create a visual relationship with the only three openings from all main rooms of the apartment. The “buffer zone” of two meters which runs along the wall of the courtyard has this function, together with that of ensuring a supply of natural light as uniform and constant as possible to the entire surface. The central nave is occupied by the living room and the kitchen. The two large sliding glass doors determine the shape of the spaces. They determine whether they is living or bedroom or study to prevail. One can perhaps speak of a “liquid space” where the elements of architecture, together with the constant natural light, combine to modify the surfaces granted and taken away to different functions. Only elements that go to contaminate the formal clarity of this structure are the two volumes, independent, self-referential, that identify the bathroom and the space of the apartment entrance. Their height vacate the view towards the timber floor, the wall hangings are constructed so as to perceive the two volumes as two boxes stuffed in the two smaller bays, giving the impression that they can slide in.