Two trees determined the sinusoidal drawing of the corridor that connects the old building to its extension, consisting of two semicircular volumes, one with two bedrooms and one toilet, and the other with a living-room and a kitchenette. A third tree has prospectively determined the deployment of the swimming pool in the area of the outer semicircle bordering the living-room. In this semicircle, an exterior staircase gives access to a terrace and also to the green cover of the two semicircular volumes. The interior and exterior walls are white and the floors are in traditional tiling.