In tourism there are attempts to standardize the service quality evaluation, such as the SERVQUAL instrument, which is a five-item scale consisting of: tangibles, reliability, responsiveness, assurance and empathy. However, this scale is not commonly used in the most popular tourism websites. In this context, we present an implementation, using IBM SPSS Modeler, of a linguistic multi-criteria decision making model to integrate the hotel guests' opinions included in the WWW and expressed on other dimensions (or attributes) in order to obtain a SERVQUAL scale evaluation value of service quality. As a particular case study, we show an application example using TripAdvisor website.