This study focuses on discovering sustainable practices and possible innovative practices according to factors of Contingency Theory. In order to achieve this, a qualitative approach has been conducted. The study analyses 24 independent hotels. Semi-structured interviews were used in this study and conducted in person with the top managers at each hotel. The results show that, in accordance with Contingency Theory, the organizational behaviour is determined by the environment in which the hotel operates, the size of the establishment, where large- and medium-sized hotels are more committed to sustainable development, the environmental technology adopted and implemented by the hotel, and the main type of clientele, with hotels aimed at business travellers who show greater attention to the environment than those aimed at leisure travellers, mainly associated with socio-cultural values. The factors that were not completely decisive in the results analysed were the age of the hotel and the sex of the hotel owner. Considering the achieved results, this study may also contribute to identifying the most sustainable hotels and can help hotel businesses understand and reap the benefits of following a sustainable path.