Zaxares: If I recall correctly, in TW1 when Geralt has a drink with Dandelion and Zoltan regarding his romantic troubles, Dandelion suggests visiting a brothel to take his mind off the situation. Zoltan responds by going, "Do they have dwarf women there?" My memory might be faulty, but I believe Dandelion replies in the affirmative. Maybe it was "they have ANYTHING you could want there."
So dwarf women are not restricted just to Mahakam, it seems, but apparently very few of them leave their homeland.
From what we find out (earlier or later) about the highly skilled amorous ladies of the House of the Night, they seem to be pretty good at being whatever their johns want them to be ;) There should be one or two who make a specialty of convincingly playing dwarf women. So there may not be any actual she-dwarves there.
Yes, Dandelion did say something like "anything you want there"; though he didn't say specifically they had she-dwarves, his answer seemed to satisfy Zoltan.