How do guests evaluate eco-certified hotels? An analysis of guests’ reviews of Portuguese hotels

User-generated content and online reviews have become a prominent source of information for tourists in the last couple of decades. At the same time, hospitality firms show an increasing concern with environmental practices, in line with customers’ changes of attitude and awareness of their environmental footprint. This paper analyses the content of reviews posted on TripAdvisor by guests staying in a large sample of environmentally certified hotels. The objective is to find out if sustainability concerns are present in guests’ reviews and identify the most important sustainability attributes. Using the Maxqda and Leximancer software, 1748 reviews from 95 Portuguese hotels were analysed; the content analysis evidences that guests’ predominant themes regarding their experiences are mostly common and independent of the category, average review, or type of travel. Eco-issues are primarily absent from the reviews. Although all analysed hotels are ‘eco-certified’, that label does not seem to be associated with guests’ attitudes and concerns. The results have relevant implications for hospitality managers.