There is no rule such that the bathroom lighting should be provided only in the ceiling or is better if it is provided at the sides or on top of the mirror. One has to fix the bathroom lightings according to one's taste and the mood that he or she wants to bring into the room. Even for a small bathroom, people, these days, go for two or more lighting fixtures. Thus, lighting is the most important factor to be considered in any modern bathrooms.
You can also choose to have natural bathroom lighting. This kind of lighting option is just perfect for small bathrooms. If you have a small bathroom to the right portion of the house, you can have a row of windows above for letting the natural light outside penetrate the bathroom.
Because the bathroom is so important and have a great impact on how your day begins and ends, you want to ensure that in designing your bathroom, the lighting is not only functional but also beautiful so as to give you a desired feel, every time you make a visit. A bathroom lighting contemporary design will definitely transform and add life to any bathroom.
The mirrors in the bathroom should reflect as much natural light as possible, also, artificial ones, if placed in front of windows, will reflect the light giving the impression of a wider space. The bathroom light must be clear, with controlled intensity and not bright. What ever lighting you choose, it must work with the furnishings, mirror and other decorative pieces placed in the bathroom. A classic style bathroom must have mirrors with elegant frames and shaded lighting bodies . For modern design choose mirrors without frames, spots placed strategically so that the light is not too bright.