The ease of which roller shutters can be moved, especially if used in conjunction with a
motorised remote system, means that they are more adept than other coverings at sunlight control. During the night, their fitting along the seams of the windows of your bedroom will effectively cut out all of the light from street lamps. Whilst during the day, they can be either completely opened or partially adjusted, completely to your preferred levels.
This is also true of the privacy that they can offer you, another important consideration in this day and age. Uniquely amongst window furnishings, roller shutters are the only ones that can maintain 100% privacy, whenever you need it. Their complete opaqueness and lack of gaps, as opposed to curtains and some types of blinds, means that you will be able to maintain your privacy to the highest level possible.