Alright just found this great little spot as i was following zygor's guide.
In STV at around 39, 58. There is a mob called Zenzil the outcast. (Zanzil the Outcast - NPC - World of Warcraft)
This mob spawns totems as you fight him and the totems in turn spawn skellies (Skeleton of Zum'rah - NPC - World of Warcraft)
The thing about these skeletons however is although they have 950 health or so they still give you around 280 xp per kill. I also had a priest out of group healing me the whole time so it was easier.
Basic steps:
Attack zanzil but leave him alive so he will spawn the totems
only attack the skeletons.
repeat process for really easy xp.