It is good that there is a practice of certification of hotels and restaurants in our time, including the environmental component. This is done by the International Organization for Environmental Education (FEE). FEE has developed an international voluntary certification program of hotels, hostels, boarding houses, business centers, recreation centers, and campgrounds - "Green Key". The unified international criteria of the Green Key program relate to several areas of the hotel's work: environmental management, hotel employee engagement, information for guests, water consumption, cleaning and laundry, waste management, energy consumption, food and drink in hotel restaurants, office work, green areas and parking lots, environmental and nature conservation activities, administration. The criteria are divided into mandatory and recommended. National standards, taking into account the legislation of a particular country, may differ by no more than 20% from international ones.
A true eco-hotel must have such a certificate. Usually, it can be seen right at the entrance; it is a small green sticker with a whole picture. But when booking, it is quite possible to ask for supporting documents to be sure of the choice of the hotel.