There are not any soapy massage places, but if you try out a few massage places, you will find a good experience. There was a place where the room was very small with only a pad on the floor, but the girl showered with the customer, took him to the room, massaged and did anything else he wanted, then would escort him back to the shower to clean up.
The Sakon Nakhon nightlife clubs are geared towards the Thai people. If you want to venture into one, be sure you have at least one wing-man to tag along. The Golden Pond Coyote club seems to be the most friendly toward foreigners and the girls there are OK and also friendly. There is a good chance you’ll find a girl for the night. There used to be another good location at The Loft Living Bar, but it has closed permanently.