So a friend and I discovered a shop near the auction house in stormwind where the guards can't attack you. It's very close to the auction house, called "the empty quiver" and it's great fun to go into the AH, kill the auctioneers, and then run to this safe house where the guards stop chasing you at the door. You can also sit in it as a hunter or a dk and type /target auctioneer and then send your pet in to kill the auctioneers one by one, it's great fun
Anyways, here are the screenshots describing how to get to it:
Auction house is on the left, the path right of the AH is where you want to go
The building is just up the path, it's called the empty quiver
as you can see, the guards won't dare come inside