My hotel has small, palm of your hand massage bar soaps for the shower. For those of you not familiar with the object under consideration, massage bar soap is regular soap molded with small "massage" nubbles on one side. While small bumps on your soap does not really qualify as a real massage, it does have a soothing effect on small muscle knots and tension tightness lurking beneath your skin. Therein lies the biggest problem. It feels just good enough that you will easily find yourself running the soap back and forth across tight, tense curves and dips much more than you would have with an ordinary bar of soap, leading to a much faster consumption of soap than you may have planned for in your toiletry budget.
There is also the issue of exfoliation. The natural exfoliation that occurs by simple rubbing the terry roughness of a washcloth across your naked skin is one of the best things that can happen to you. Roughing away the surface dead skin cells leads to brighter, lighter more glowing skin (don't rub too hard-- red skin is NOT glowing). Mechanical action is also one of the major contributors to the removal of bacteria and other "ick" from your environment. Rubbing a bar of soap directly on your body gets every more foamy and slick, but does NOT provide that fresh scrubbed glow.
In my opinion, this is a product that combines two great products and comes out with something that is not quite as good as the originals on every point. Stick with your favorite soap, a great washcloth and maybe a waterproof massager, if the in shower massage is important to you. I think when I get home, I will resort back to the ministrating fingers of my man and leave the massage toys alone.