Design a spacious and inviting full bathroom in French Mid-Century Modern style. Start with a warm color palette featuring soft whites, warm wood tones, and touches of brass or gold. Choose a double vanity with clean lines, polished wood finishes, and marble countertops. Install a large, frameless mirror above the vanity to create a sense of openness. Opt for a walk-in shower with sleek glass doors and geometric patterned tiles, complemented by brass fixtures. Add a freestanding bathtub with a minimalist design for a touch of luxury. Incorporate mid-century modern storage solutions, such as built-in shelves or a stylish cabinet with rich wood tones and streamlined designs. Use geometric or patterned tiles for the floor and a simple backsplash behind the vanity to add visual interest. Decorate with understated, elegant items like potted plants, simple artwork, and luxurious toiletries to keep the space uncluttered yet inviting. Install retro-style lighting, such as globe sconces or brass fixtures, to enhance the bathroom's warm, modern ambiance.