Choosing the right paint color is only half the job, sheen determines how that color performs over time. Sheen affects durability, how visible imperfections are, and a room’s overall atmosphere, with higher-sheen finishes resisting stains while flat finishes hide surface flaws. Flat and matte finishes work best on ceilings and in low-traffic rooms like guest bedrooms, since they show fingerprints and scuffs in busier spaces. Eggshell and satin strike a practical balance for everyday living spaces, with eggshell suited to living rooms and satin better for humid or high-traffic areas like hallways. Semi-gloss and gloss handle the most demanding surfaces, from trim and kitchens to cabinets that face daily wear. Choosing the right sheen for each room, based on traffic, moisture, and use, helps a repaint job stay looking sharp for years to come.

source: https://gildedpainting.com/which-paint-sheen-works-best-in-each-room/