Confirming I saw the Queen as noted at (810, -1700, 0) - this is the SE corner of the room which is directly south of the location that is on Brewalls/Goods map. Not sure if Brewalls/Goods maps are wrong or if the Queen can spawn in any of three corners in the room. Note I never killed any PH nor the clockwork spider but just wandered by randomly checking the area if this named spider was up or not while I was working on other Hunter achievement named.
As a previous post noted, I think one of the phase spiders in the room (at least the one in SE corner) just turns into the named -- and then turns back to a phase spider after some time. I witnessed the same thing with Pierre while trying to get Slani. There was some common rat mob at Pierre's location which just turned into Pierre. Pierre stayed there for a few hours and then turned back into a common rat mob. This zone seems to have unique way spawning named that is not the same as the other zones ... traditional camping does not work for some of these named....