In this paper, the perception of the local population of the municipality of Tisno about the impact of The Garden Festival on the local community was investigated, with a focus on economic, socio-cultural and environmental effects, as well as on the cooperation between the festival organizers and the local community. The research was conducted using a survey method on a sample of 56 residents, in the period from June 15 to July 15, using a structured questionnaire based on existing literature on similar topics. The survey covered the period during and immediately after the festival, in order to obtain the most relevant data on the respondents' perceptions. The results of the research showed that the local population of Tisno generally perceives the economic effects of the festival positively (average rating 4.35), while attitudes about the socio-cultural effects are more neutral (average rating 3.83), which suggests that the festival is not perceived as a significant factor in to the development of the cultural scene. Furthermore, the perception of cooperation between the organizers and the local community is slightly positive, but with a large variability of opinions (average score 3.61), which points to the need to improve cooperation. Finally, the impact of the festival on the environment was evaluated negatively (average score 2.80), which suggests the residents' concern about the environmental aspects of the festival. In conclusion, the work indicates that it is necessary to improve the cooperation between the festival organizers and the local community and take measures to reduce negative environmental impacts, in order to increase the support of the local population and achieve more sustainable effects of the festival.