Erotic massage studios in Jerusalem are well-known cover-ups for illegal brothels. These venues are immensely popular with local married men. The downside is that they’re often raided by the police. As such, sensual massage parlours in Jerusalem will be on a constant move, changing locations.
You can try Maslul Tantra (https://www.maslultantra.com/) at Costa Rica St 27, but you’re better off asking the taxi drivers for more current spots. An hour will cost you $150 at the most.