Couchsurfing is a website, i.e., a platform that provides services to those who dare to use free accommodation in someone’s home and a platform that offers the opportunity to socialize with other Couchsurfers and join groups where mutual experiences on tourism and destination activities are exchanged. Given that the concept of Couchsurfing is unusual in comparison to other platforms of sharing economy, the aim of this research paper is to determine the profile or characteristics of platform users and the impact of Couchsurfing on destination tourism. The main goal is to answer the question on how a platform that provides free accommodation in a foreigner’s home contributes to the development of tourism and the recognition of the destination. For this purpose, a survey questionnaire on the attitudes of users was conducted, as well as an in-depth interview with the hosts. Methods of analysis, comparison and descriptive method were used. The focus of the research is Croatia as a tourist destination and the key results include financial analysis in terms of consumption and registration of tourists on Couchsurfing who do not pay the sojourn tax, as well as the effects of supply, demand and marketing through tourists’ activities in the destination including social media and other destination image forming activities. These aspects were complemented by research on the safety and future of Couchsurfing.