Customers -a young couple- had bought an old building in the early 50 arranged on 3 floors with a small garden. Our project has transformed a small block of two small apartments in a detached house. The first floor is the heart of the house: around the small gray cube that hides a bathroom rotate the entrance, the kitchen and the living room. From the latter starts the staircase going up to the sleeping area, with two bedrooms, a large bathroom and a walk-in closet. Circulation and light are the principles that inspired the composition: the large integrated sliding doors in the gray volume may merge or separate the main spaces of the house.