The building geometry develops inside a tension area of maximum utilization and legal framework. In order to let the surfaces of the volume respond rich in nuances to light and environment through their inclination angle, a sculptural relief in anodized Alumium was developed for roof and facade, which gives the building, despite its materiality a natural appearance. The building of the apartment house anchors itself with a clear orientation on its own in the hillside plot. The building's facade to the road reacts introverted with hole windows, while it opens generous the southern and western facades with panoramic windows for views of the city, lake and the Alps. In the open to outdoors staircase, the perforation of the building skin causes a textile-like shell that accompanies the transition from public to private space with a play of light and shadow. It circulates to three apartments that develop over four floors: an attic with the into the volume sunken patio, an upper floor apartment and a two-storey apartment with garden relation. Each apartment cuts into the building, generating exterior spaces with an approachable, haptic quality of stay through their mount in solid wood.