The leitmotiv of the project is the vertical elevation. A skylight invites the light to travel down through a light spiral staircase to the ground floor. The staircase is mounted with rings that contain the perforated sheet metal steps and that are inserted into a central stem that crosses the house from top to bottom. The three floors are connected through the two intersecting rectangular stairwells that visually communicate the different levels. The spaces are diaphanous and contain all the custom furniture.