For small spaces, eggshell and satin wall paint finishes work best as they offer a soft sheen that reflects natural light gently, making rooms feel brighter and larger. Flat or matte finishes can absorb light, potentially making a small room feel darker or cramped. Semi-gloss paints enhance durability but can highlight imperfections, so use wisely. Choose finishes that balance light reflection and maintenance to create an open, inviting atmosphere in compact rooms.