The interior designer Bert Haller, who is entrusted with large projects, designed the rooms of this hotel so they are clear, light, and elegant. Gray tones dominate the color scheme; light marble and warm light convey restrained luxury. In the unadorned building of the former Postbank, the eye finds peace. The spa area in the basement benefited from the fact that hardly any walls could be moved. The “canyon” that arose because of this snakes through a glamorous mosaic world.