All dark elves start off warmly to the ghouls, this is the highest you can reach (it's possibly Innoruuk worshipping sk's and necros have better faction, than most dark elves, but they will still con warmly to the ghouls).
Also, at least 6 ghouls belong to this faction. Three guard the entrance to the Lodge, and another three exist around the perimeter of the Lodge, and on the roof.