You could try the Stronghold of Security. Some of those monsters will auto-attack in small crowded rooms. Hence, you can be fighting almost all of the time with fast respawns. If you pick some of the mid to lower level monsters then you won't even need much food. You earn exp based on the hit that you do, hence, constantly killing lower level monsters can provide easy and (relatively) safe training. Hope this helps those will eventually stop being agressive the only monsters that work well like that are bandits in the desert with zammy cape on, rock crabs, and things in wild