Paint is the cheapest, highest-impact change you can make to a room.
Finish: More Important Than Most Think
Flat finishes are most forgiving of wall imperfections but least washable — appropriate for adult bedrooms. Eggshell and satin are the workhorses of residential paint. Semi-gloss and high-gloss are for trim, doors, and cabinets.
Color: Test Before You Commit
Paint colors change dramatically in different lights. Always test on the actual wall — paint large patches and observe at different times of day before committing.
Quality
Premium paints cover in two coats where cheaper paints need three. For most interior walls, a mid-to-premium eggshell from a major manufacturer is the sweet spot.