No windows

A lack of ventilation can be a huge problem, and the reasons are pretty obvious. I mean, who wants to clean themselves in a dark room, with 0 natural light? If you just started renovating a bathroom, make sure you position it on the outside of the house, in a room that has an outside view.

After all, nothing is as therapeutic as natural light. However, if an outside window is completely out of question, you could also install a skylight that could offer enough light and air to give the feeling of a natural ambiance. It’s extremely important to consider this when you’re re-arranging your bathroom.