Begin your setup by mapping out the exact footprint of your bed arrangement on the floor, projecting those dimensions upward to ensure your island frame unifies the space below. Construct a robust, independent rectangular grid using galvanized steel studs, suspending the framework from your ceiling joists using heavy-duty vertical wire hangers and anchor clips. Clad the bottom face and outer vertical borders of the floating frame entirely with smooth gypsum sheets, ensuring all corners form perfectly crisp, sharp geometric right angles. Run all internal electrical wiring lines inside the metal channels, cutting clean circles for your low-profile recessed downlight canisters before sealing the joints. Apply smooth compound over the seams, sand carefully, and paint the entire island in a flat matte finish that matches your wall color.