The first thing that you need to decide is if you will be converting your old shower or tub into a steam shower tub or if you will be buying a fully enclosed unit.
The second thing you should considered here is the size of your bathroom. You may use a steam shower bath tub as it provides you the advantage of both a shower and a bath tub at the same time instead of just a shower unit if your bathroom is large enough. The layout of the steam shower tub is also of importance. The design must be able to retain as much steam and heat as possible. At the same time you must have provisions for ventilation so that there is no humidity related problem which usually cause mold.
This is why many people will look at buying a fully enclosed steam shower tub. No need to worry about getting the tub kit to work right or making sure you get the doors installed right. With a fully enclosed steam shower tub they are built for the high humidity and you should have no problems with mold at all. The fully enclosed steam shower tubs also come with many options such as radios,MP3 players, TV, and more. They have many different body sprayers and can even seat more than one person.
The third thing you have to keep in mind is the aesthetics of your bathroom. You have to keep in mind that not all steam shower tubs are able to blend with every bathroom look. Some people prefer a more elaborate, classical type look while others want a modern look. Fully enclosed steam shower tubs blend well with most bathrooms since you have many different makes and models to choose from.
So if you are looking to upgrade your bathroom why not give a fully enclosed steam shower tub a try. It will not only improve your bathroom it will also improve your health.