If you are looking to put in new curtains, consider blackout curtain styles. You don't necessarily need them throughout the whole house, but they are especially useful in bedrooms.
1. Improved Sleep
Most people sleep best in a dark and quiet room. Blackout curtains are designed to let no light in through the material. They are also often made with extra pleating and fabric, so it is easy to fully cover the window so no light gets in around the edges.
