I almost forgot about Nakarat Massage, it's along the Sala Daeng stretch, at the corner of Sunrise Tacos Restaurant. Gave it a try after nearby Adam Massage had no availability, I believe it was during May 2018 visit. The place is on 3rd floor of another building, and the masseuses are hard to miss as they are lean muscular in tight black t-shirts. In terms of looks and build, they are higher than average. https://www.google.com.sg/maps/place/Nakarat+Massage+and+Spa/@13.7281461,100.5330373,19z/