This paper aims to identify the current level of implementation of the principles of sustainable development among hotels in the mountain area of Romania, how these standards influence the occupancy rate with the help of communication strategies, and to what extent the implementation of international management standards leads to an increase in the profitability rate. The research was carried out on the basis of questionnaires addressed to the hotels in the mountain areas of Romania, with information being collected from a number of 77 hotels, rated between 2 and 5 stars. The results obtained from the research highlighted the existence of positive correlations, both between the use of a communication strategy on the sustainable development objectives and the occupancy rate, as well as between the implementation of international management standards and the increase of the profitability rate.