If you want to hunt aoe:
Werecreatures on Grimvale -3 usually free,
Vengoth castle - especially if you're female character - even on double exp this place is free from people due to quest needed for an access,
Werehyenas - in many servers this hunting place is kinda free for all.
Werelions - but this closed to werehyenas entrance - usually free and on Your lvl this big room and 2 square tunnels on top of it should be more than enough and it's usually free.
Inq hellfire fighters - kinda forgotten place.
Solo
Furies Thais - kinda crowded on loot/resp event but on double it should be free.
Ghastly dragons - no need to do the mission with tomes. They are usually free and forgotten by people :)
Hellhounds on INQ - hard to get over there but its super chill respawn.
This is respawn that mostly I was hunting and I really hate when someone is disturbing me :)