Erotic massage parlours in Rotterdam aren’t anything extraordinary. In most Rotterdam based erotic massage studios you will find a bunch of Asian girls in skimpy outfits that provide different types of massage with usually a happy ending. Especially if you include a tip you can count on a decent hand-job at the end of the session Prices start at €30 - €60 per hour, not including the tips for extras on the side. Rotterdam and also The Hague have a fair number of Thai massage salons. Before you go there, check their sites and reviews to be sure about what kind of services are possible. Usually you can tell from their website whether something more spicy than the traditional Thai massage is on the menu.
As is the case in all big cities in the Netherlands, the number of Chinese massages salons in Rotterdam has exploded. These are often tiny and a bit shady studios that officially offer Asian health treatments. But they have the reputation to offer also spicier stuff on the side.
Many brothels, escort agencies and independent escorts claim to have also erotic massage on the menu. It seems everyone is a certified massage therapist these days. Massage Salon 93 (http://massagesalon93.nl/) at 's-Gravendijkwal 93 is one of the more interesting ones in Rotterdam with several attractive masseuses. But In my humble opinion, you might be better off by hooking up with one of the escort girls who also have erotic massage in their service package. At least you know what you’re paying for from the start.