Santa Cruz Verde 2030 is an inner-city megaproject that will transform the local oil refinery into an urban neighborhood in Santa Cruz de Tenerife, Spain. The project is expected to reconfigure Santa Cruz’s tourism model significantly, while applying rather undemocratic planning practices. This paper explores Santa Cruz Verde 2030, focusing on the perception of local stakeholders. My research builds on 18 qualitative interviews with planning authorities, the city’s mayor, political parties, experts from the real estate sector and residents. I identify a large perception gap among the interviewees. While the project’s initiators praise the participatory process, other stakeholders feel neither informed nor integrated. In particular, the “behind closed doors” planning approach has provoked resentment among citizens. In contrast, the possible impact on tourism of the project has given rise to less discussion. This contributes to the “stealthy” touristification strategy that has already transformed large areas of Santa Cruz’s waterfront in past decades. Hence, this paper adds to the ongoing discussion on how to design megaprojects in a more sustainable way, for example, by ensuring political consensus and learning from former megaprojects.