Yes, the rule of three can significantly improve decorating in small living spaces by simplifying styling choices and avoiding clutter. Group three key decorative items or colors to create intentional focus points, such as three art prints or three accent pillows on a sofa. This odd-number grouping maximizes visual interest without overwhelming limited scale, making rooms feel balanced and airy. The rule of three helps small spaces look curated and welcoming with minimal effort and maximum style impact.