Hi, another option to get privacy whilst retaining maximum light into a room is to use frosted window film. Here are a couple of blogs with some examples.
You can buy patterned and plain film from the Inkmill Vinyl website and it is really easy to apply (and remove). No fixings, drilling or sewing required!
Inkmill Vinyl
Related Discussions
Bathroom Window Treatment
Q
Large bathroom window at front of house
Q
Which of these would you chose as your bathroom window ?
Q
Small bathroom, window bath/shower issue
Q