However, with L shaped curtain rod, you can install it in a spacious bathroom or the small one, as long as the shower or bathtub that you want to be curtained is placed near the wall because it needs to be installed by attaching each end of the rod to the wall. While the iron curtain rod needs big attention since it can be rusted if it is not well treated, therefore some people don’t really use this kind of rod for their bathroom. The steel is good for more elegant bathroom where there are several furniture of the bathroom that also use steel to get the same color so that it will match with the decoration of the bathroom. Architecture.