This is a media art turn-key construction project that transformed a monotonous indoor cafe into an artistic and fantastic immersive relaxation space. By applying multi-sided projection mapping technology covering the entire walls and floors, we implemented ultra-high-definition media content with various themes, such as pouring waterfalls, vast outer space, and fluttering petals. In particular, the reflection of light and the scalability of the space were maximized through a multi-sided mirror structure placed in the center of the space and precise grid calibration. Beyond a simple cafe, this is a case of high-end commercial space branding that provides visitors with visual healing and an overwhelming spatial experience.