The project consists in the renovation of an individual apartment situated at the 2nd floor, in the center of Liège. The customer is a contemporary art lover and also of classical music. The idea of the project amounts to a big "wall-piece of furniture" which contains water and technical girdles. His position allows to separate delicately the daytime zone and the night zone. The free arrangement and the absence of real separations allows to win transparency and fluidity in the different spaces.