"place them where you want", they said. But if you want a consistent world, not every placement will make equal sense. Find thoughts and inspiration on where (and why) to put the Raven's purge sites.
Beware:
Spoilers ahead
Although your GM might have an entirely different view on the world. You have been warned, though.
Haggler's House
Haggler's house should be placed on the plains of Harga, in the Heartland of the Rust church and not too far from Alderstone. Placing it near but not on a body of water will have helped to provide slaves during the bloodmist, while at the same time acting as natural defense (because apart from Rust brothers, no serious army could cross the bloodmist.)N41