Of course it's okay to put an area rug on a carpet! In fact, put an area rug on top of a larger area rug! One reason is for aesthetics. Area rugs can bring in complementary colors to make your decor more cohesive.
There are also practical reasons. An area rug on top of a carpet covers up and protects worn down carpet fibers or stains. Area rugs can give more comfort to bare feet, help to muffle or reduce noise from adjoining apartments.
For a layered look, enhance your decor with an area rug on another area rug.
If bold, sexy and classic is your style, a cowhide area rug is just what your small space decor is screaming for. For the budget minded, faux cowhide area rugs are available. However, there are differences between an authentic cowhide leather rug and a faux cowhide rug, such as durability and feel. Before you buy, consider "The difference between Real Cowhide And Fake Cowhide," at Cowhide Outlet.
There is one serious issue that often occurs with an area rug on carpet: the top area rug will pucker or "creep" out of place! It's maddening. Fortunately, there are two options to keep the area rug in place. One option is a rug gripper (or pad) that is placed between the area rug and the carpet. In this case, it entirely fits under the area rug. A second option is a rug gripper that is placed only at the corners of the rugs. The type of rug pad or gripper will depend upon the size, weight and traffic location of the area rug. For some examples, see "How To Make Rug Stay On the Carpet," then shop around.
Here are two examples of area rugs on carpet I have in my apartment. This first one is a Karastan oriental area rug I've had well over 15 years. It's short wool fibers are soft and much more comfortable on bare feet than the carpet in the apartment. It has survived three long-haired dogs and still looks good.
At the old house, I had it in the library on top of a carpet and had the T.V. stand on it near the edge. Drove me crazy because it would always pucker and move. In my apartment, I have a leather sofa on it and it works beautifully over the boring apartment beige carpet.
In the second example, on top of the apartment carpet, I actually layered a soft wool sisal area rug over it and on top of that I added a Greek flokati shag rug. The wool sisal is stiff and doesn't move but you can see that there is still some puckering where the ottoman legs are on it.
Some things you just have to live with and I decided this is one of them. I much prefer the soft wool of the sisal on bare feet. And too, I really love the layering and textures that add interest to my very neutral decor scheme. Texture and shades of color are critical for interest to a neutral decor.
Bedrooms are very popular spaces for adding an area rug.
I'll state it again, of course you can put an area rug on a carpet! For practical reasons such as comfort and hiding worn areas, it a great solution. But I must admit, I simply love the idea of the pop of color and added texture area rugs bring to an otherwise tired apartment decor. Remember, you can take it with you too!
Where would you put an area rug in your apartment? Or would you?