There are lots of varieties and styles of beautiful flush and semi- flush ceiling mounts of bathroom lighting fixtures available in the markets, which will go well with the mood of any bathroom.
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.
Ambient lighting: This sort of lighting covers the general bathroom space. You could have a centrally fitted light - a chandelier, for example, if you want to opt for a special and creative effect - or several bright lights fitted all along the walls. If you are planning on installing recessed lights, be sure you install several recessed light fixtures or use recessed lights in combination with other styles of lights. Just a few recessed lights will not do the trick. Be sure you use glass lens over the recessed lights; plastic turns yellow with time.
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.