Review for self-serve dog wash only:
They have a metal tub to put your dog while you wash him. $5 for 6 min of use (disinfecting tub, rinsing, shampoo, conditioner, dryer) which is not NEARLY enough time so you'll probably want to bring more $ (machine takes credit cards, quarters or dollars).
The dryer is pretty weak so bring towels too.
Bring some rags to clean out the hair in the tub from previous dogs.
For the price, if you want a really thorough wash you're better off going to a real self-serve dog wash place, which usually are around $12-$15.