dimensions and gold-decorated profiles are barely distinguishable from the originals, they ensure maximum 5-star well-being for the hotel guests inside: the optimal thermal properties of the insulating glazing [...] energy efficient by the Japanese architectural practice SANAA. The original concept of providing maximum daylight is now also reflected in the building’s new appearance: the famous, listed, “Verrière” was [...] new office spaces in this part of the building, the 96 residential units and a children’s nursery. Maximum natural light was also one of the key design criteria for the imposing Art Nouveau façade of the