The bathroom, like any other room in the house, needs to be a room that you are comfortable in and happy with, perhaps even more than other rooms in the house because the bathroom is often a place of calm and quiet relaxation. This means of course that the bathroom, just like the rest of the interior of the house needs to be designed.
This doesn't mean that you need to get a professional interior designer to come and do it for you, it just means that you have to put some thought into what you would like the space to be like. Doing this, as opposed to just throwing some things in a room, will make a huge difference.
If you are interested in top branded bathroom suites, then that is what you should put in your bathroom. This kind of renovation is not particularly expensive and can be done relatively quickly.
If you are more interested in a style change than a fixture change then there are other things you can do. Modern fixtures in a bathroom often give the room a clean, sleek look.
But perhaps you are looking to add some colour to the sleek lines. Replacing the old bathmats and towels with ones that are soft and brightly coloured will be good for your skin and pleasing to the eye.