“…Tons of information related to touristic and cultural heritage sites are nowadays available on the Internet. In particular, reviews of tourism amenities and sites posted online by tourists represent an emerging source of data to support tourism research (Johnson et al, 2012) as well as travelers (Ho et al, 2012;Fararni et al, 2021) and, more important, policy makers and administrators, who can leverage them to improve many aspects of the sites, such as the available services and their management (Teixeira et al, 2021;Zhang et al, 2021) or sustainability (Marchi et al, 2021;Prandi et al, 2021). In Italy the tourism sector generates more than 13% of the national gross domestic product, and it represents over 6% of the employed (WTO, 2018).…”