One of the most important aspects of general health and well-being is the quality of sleep. Sleep is significantly impacted by interior design, which affects elements including psychological comfort, temperature regulation, light exposure, and sound insulation. The relationship between interior design features and sleep quality is examined in this paper, which also provides evidence-based suggestions for creating homes that encourage sound sleep. Combining knowledge from ergonomics, environmental psychology, and architecture, this study emphasizes how important design is in creating a sleep-friendly space.