Product Service System (PSS) design is shaped by different needs, requirements, and stakeholders. It involves understanding the needs and preferences of various stakeholders, balancing conflicting requirements, and integrating different sustainability concerns. Thus, a successful PSS design requires a systematic approach to effectively guide multi-criteria and collaborative decision-making. This article focuses on the collaborative decision-making process for the sustainable design of PSS, with a focus on integrating economic, environmental, and social considerations. Specifically, our research explores the application of Multi-Actor Multi-Criteria Decision-Making techniques, such as PROMETHEE II, to address the intricate interplay of three sustainability dimensions. Through collaborative innovation and co-creation, facilitated by the involvement of multiple stakeholders, we aim to promote the creation of PSS solutions that not only enhance economic viability and environmental sustainability but also contribute positively to social well-being.