All of the places on 1st ave between 15th and 16th (there are 3) are legit only these days, despite what might read on RM. As far as I can tell the two places on 8th street near 1st ave are also legit only, if anyone knows different please let me know.
These places generally know their clients so they will give vague nice sounding promises to get you to 60+ minutes. They'll use lines like "30 more minutes and I finish the massage" with a smile. They'll keep repeating that til you wise up and realize even if there's a turn, nothing's gonna happen.