Top designer tips for improving basement bathrooms include using LED lighting with a high CRI of ninety or more for accurate colors, installing a drop ceiling for easy access, choosing warm 2700 to 3000 kelvin bulbs, finishing floors to secure footing, and hiding pipes with soffits or cabinetry. Adding a softly glowing mirror and calm paint colors help the space feel expansive and soothing. These expert strategies focus on safety, comfort, and style without major renovations.