change only the left building in the blue circle into a sauna space keep the exterior architecture camera angle lighting landscaping and overall style the same remove the living room furniture inside the left building and replace it with a sauna interior that matches the reference image with built in wooden bench seating along the walls warm natural wood finishes and a simple sauna heater stove positioned as shown in the model make it feel like a clean minimal luxury wellness sauna visible through the glass while preserving the structure and proportions of the building
