Like most latin parlors? I wouldn't say most latin parlors have them. What places are you talking about that has a shower in each room? I've been to 2 places that I can remember that has a shower in the same room, bliss Spa and nirvana.
nearby?, most i have been to. Pines Center in Bound Brook, Horizon Spa in Bridgewater are the most popular. Horizon doesnt have one in each room but if you ask in advance you can get put in the special room that connects to the shower. They usually have 3 great girls on roster each day, but clientele keeps intel close to the chest and the providers there never seem at a loss for business to want to over advertise. Having a shower in the room makes for a more discrete visit as you are whisked away to your room. Take a shower and lie down. None of that wait for shower to be open and hope your dont run into mongers/providers nonsense.
Defunct spas with the setup were Carribean Spa in Edison and Energetics.
You pay a little more to go to spas above than Reiki but I like the low traffic, more space, showers, and the girls tend to be more eager to pelase because they have a manageable list of clients and rely on regulars than pop ins. If you find a good one you wont go anywhere else. I dont live in the area to know more than 1 currently working but im sure locals know of a few, that is if care to share, which might not be likely