When you’re choosing between standing and hanging towel racks, there’s one main consideration to think about: How much floor space you have. Unless you live in a very large home, you’ll tend to have more wall space than floor space, so consider that first; it’s typically the limiting factor.
If you don’t have a lot of floor space specifically next to your bathtub or shower, it’s a good idea to use a hanging wooden towel rack. This will add less visual clutter to your bathroom area, and will also allow you to have the towel at any height that would be preferable for your use.