Hotel Sans Souci was first certified in 2017, and many sustainable measures have been implemented over the years. An important step has been the calculation of carbon emissions. Together with ClimatePartner, Hotel Sans Souci Management GmbH has calculated the Corporate Carbon Footprint (CCF) of the company. A CCF represents a company’s CO2 footprint and sum of the CO2 emissions produced by the company within a set period of time and defined system limits. The calculations are based on the guidelines of the Greenhouse Gas Protocol Corporate Accounting and Reporting Standard (GHG Protocol). The result of the emissions calculation for business activities at Sans Souci Vienna Hotel per overnight stay was 32.85kg CO2 per room per night in 2021 and 21.37kg CO2 per room per night in 2022. According to the hotel’s most recent Sustainability Report, a reduction in CO2 emissions of 35% was achieved.