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.
The first thing to consider is the look of the light itself. This may be a wall light, bathroom mirror light or ceiling light, and each of these types offers a whole variety of choice. If you have a bathroom with chrome based fittings, such as chrome taps, chrome towel rails and chrome handles on bathroom cupboards then it's probably a good idea to consider opting for bathroom lights with a chrome finish. Nickel plated lighting offers a beautifully warm look, but it's generally best to complement chrome with chrome rather than mix nickel and chrome together.
Bathrooms are characterised, in general, as more restricted areas - they are not always the big, airey rooms we may hope for and, often, do not have natural light. As such, lighting becomes more important than usual. Lighting must be more intense than in the rest of our house, as compared with the needs of the room.
If you want to look your best then you'll probably spend a fair bit of time in the bathroom, but unless you have decent bathroom lighting you may not be seeing yourself in the best light.
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