In rental bedrooms where painting isn't allowed, personalizing through lighting, textiles, and accessories is key. Switch bulbs to a warm 2700 kelvin light to soften the atmosphere. Add a repeat accent color through pillows, throws, and planters for cohesiveness. Layer textures like linen or velvet and use right-sized furniture pieces. Styling shelves with personal photos and curated decor adds character. These steps create a cozy, lived-in feel that makes a rental bedroom your sanctuary.