Our master bath has a very large window above the bathtub. It has a shade that lets in light. I would like to install privacy glass block some day, but I doubt it will ever happen. The other bathroom is in the middle of the house and has no window. We are finishing the bathroom downstairs and it does not have a window either, in the middle of the basement. I love sunlight in a bathroom. It makes your makeup more natural looking when you put it on. We took out the flourescent lights and put in regular lights to help with this.