I used to go to one down off a small soi on Silom but closer to the Suriwongse side. Think it was Silom Soi 6 but not sure. I believe the name was Phensom Barber. They cut hair very well. You had a regular haircut and then she asked if you wanted a massage. She took you upstairs and gave you a massage. A HJ, BJ, FS were all on offer. This was back around 1990 to 1996. Not sure if it is still there.