The generation of single-use plastic waste increases by 30% in summer, in correlation with the seasonality of tourism. Flowing is a bottle sharing service for hotel guests that allows tourists to replace disposable plastic water bottles with reusable and returnable bottles aiming to reduce plastic waste, enhance sustainability awareness, and promote responsible travel behaviour. The project intends to connect local stakeholders within the tourism sector so that tourists can easily obtain and refill the bottles at any time and place using an application that indicates the nearest refill points.