Apartment building with five residential units in Berlin - Grunewald. The design is characterized by high flexibility in the floor plan. A central piece of furniture in the room unites all functions and at the same time organizes the space. This creates different depths of views and movements in the floor plan. The transparent outer skin allows different degrees of opening, while the inner, dense part of the apartment remains hidden from view. Efficiency and generosity are combined in a simple square floor plan of just under 70 sqm.