The document provides case studies of two hotels in Austria that have implemented various eco-innovations: Hotel Süd sources products locally and uses refillable dispensers to reduce waste. It harvests rainwater, uses natural materials, and sources 90% of paper products sustainably. Energy efficiency measures include LED lights and a combined heat and power plant. Waste is separately collected and only eco-friendly detergents are used. Hotel Retter sources food locally from organic producers and uses sustainable materials like wood. It has a rainwater system, energy efficient construction, biomass heating, and LED lighting. Electric vehicles are provided for guests and sustainability is discussed with staff. Profits from sparkling water