The building in the center of Vienna was converted into a hotel and an attic was added. In addition to integrating a 5-star hotel into the listed building from the 17th century, ways were found to accommodate a gourmet kitchen with modern technical equipment for the hotel's restaurant area.
During the modernization, the building was equipped with state-of-the-art ventilation, heating, air conditioning and sanitary facilities. The heating and cooling energy is supplied by district heating and district cooling connections.
Due to the monument protection, various special solutions had to be used: