Cardiff is the capital of Wales so it is a fairly sizeable city. The closer to the centre of the city you get the more businesses you will find. Sometimes you can find a true gem on the outskirts of the city.
Cardiff offers so many great salons to choose from you may be surprised to find that some of the most outstanding ones are located near the edge of the city. Salons that are located a little off the beaten path typically are less expensive than salons that are easy access in the centre of the city.
It really comes down to personal preference. All you need to do is really ask yourself how willing are you to travel around? Maybe time is of the essence and you do not have time to go the extra few miles perhaps convenience is the most important aspect in your choosing a salon.
Cardiff offers salons both in the city proper and right outside the outskirts of the city.