Sustainable tourism management is becoming an increasingly important factor in the image of tourist destinations. Therefore, it is appropriate to consider the possibility of charging a premium price on certain tourism products or services in exchange for making them more sustainable. Generally, eco-friendly management of cultural heritage sites, and particularly World Heritage sites, along with protected natural areas, is essential for the image enhancement of tourist destinations. In line with these considerations, this paper aims to quantify the willingness to pay (WTP) an extra amount in order for certain tourism products and services to become more sustainable in a World Heritage city such as Caceres, Spain. By using the contingent valuation method, the average price increase that tourists visiting the city would be willing to pay for a double room in a hotel, a restaurant, entrance to a museum, or a taxi ride, all of which would become more sustainable services, has been estimated. In addition to the aggregate analysis, diverse average-comparison statistical techniques have been used in order to determine the possible influence of sociodemographic factors on the WTP for more sustainable products and services. Specifically, factors including the effect resulting from a tourist’s place of origin, gender, the year when the survey was conducted (through t-tests), and the effect of age and educational levels (through ANOVA tests) on the WTP for sustainability, have been analyzed. When considering all of the sociodemographic factors involved, notable statistical differences have been found. This implies that when a hypothetical increase in tourism prices for the purpose of financing public or private sustainability actions is considered, different segments of the tourism market should be taken into account, since it would not be appropriate to apply the same policy of price increases to all tourists equally.

The willingness to pay for sustainable tourism products and services has been widely discussed in the scientific literature. However, change in the willingness to pay over time has rarely been analysed. Such studies are important for understanding the impact that the increasing debate on sustainability, including environmental, economic, and social aspects, may have had on the willingness of tourists to pay more in order to ensure the sustainability of destinations. The aim of this article is to assess how the willingness of tourists to pay for sustainable tourism services has developed in the Spanish city of Cáceres, declared a World Heritage Site in 1986. Data from surveys conducted in 2012 and 2016 were used for this purpose. Logistic regression was applied to determine whether sociodemographic characteristics of tourists who visit the city influenced their willingness to pay in each year. A Chow test was applied to elucidate whether the differences between the years were statistically significant. The results obtained indicate that only the level of education determined willingness to pay, while origin, gender and age showed no effect. No significant change in the willingness to pay for sustainability was found among tourists in Cáceres between 2012 and 2016. These findings indicate that the willingness to pay for more sustainable tourism services did not increase during the period studied. We propose some measures such as a ‘municipal observatory of sustainable tourism’ in order to increase willingness to pay in this type of destination.

The fusion of the social economy with the digital economy, together with the essential need for social organizations to innovate in order to face challenges not satisfied by using traditional methods, led to what is known as digital social innovation: the use of digital technologies to allow or help to carry out social innovations. We are facing a developing field of study, in full evolution and with a high and recent level of global activity, which makes it a true global movement. This, together with the fact that DSI practices still lack unanimous and systematized criteria, calls for identifying what DSI is and what should be understood by it. Therefore, this chapter aims to configure and illustrate the conceptual framework of DSI, detail the barriers that are limiting its momentum, and formulate a general scheme of action for good practices in DSI.