Most erotic massage parlours in The Hague (Den Haag) are of the Asian kind and employ Chinese and Thai girls. A session usually costs around €70 and includes a happy ending via manual relief, sometimes oral. Try Massage Wereld (https://www.massagewereld.com/) at Weimarstraat 106. They have erotic massage salons all over the country. Lila Thai Massage (https://www.thaisemassage-denhaag.nl/) at Kempstraat 91-93 is a good pick if Thai style erotic massage is up your alley.
There’s also a very impressive directory of freelance erotic masseuses in The Hague at Bodyrub (https://bodyrub.nl/). Independent masseuses or girls who work freelance on their own in combination with a job in a salon will advertise also on Dutch erotic classifieds sites and advertising platforms such as Kinky.nl (https://www.kinky.nl/) or Sexjobs.nl (https://www.sexjobs.nl/). Searching for erotische massage on these platforms will certainly give you some leads.