The interior design of the Vietnamese bistro works with the concept of layering and a deliberate blurring of boundaries between the interior and the outside world. The primary layout and compositional element is the insertion of a compact service volume into the original space. This composite element integrates the entire operational background, which is clearly divided into a customer restroom area and a food preparation zone for staff. The surface of the inserted volume is finished in coarse-grained plaster—a texture typically characteristic of the exterior—thereby transforming the service area into a fluid transition, becoming an informal intermediate space between the interior and the street. Furthermore, the entire object features a reduced height (datum level), allowing the full depth and volume of the original space to be continuously perceived from the main dining area. Visual transparency and immersing the visitor in the culinary experience are essential aspects of the concept, achieved through two strategically placed openings. The first, crafted from glass blocks, offers a view from the large round table. The second opens a view into the kitchen directly from the ordering point at the counter, naturally engaging guests in the process of food preparation. It is the long service counter that becomes the interior’s most prominent signature feature. Its base is clad in raw perforated brick, seamlessly met by a countertop in the same color tone with a microcement finish. The strict, clean geometry of this dominant block is strongly supported and visually extended by subtle linear lighting fixtures.