The zone has nothing to do with Maltena, nor does it give a quest update. "Putting Maltena to Rest" is only the starting access quest to be able to run through this zone. Purely for fun and loot. All named monsters give aa exp, and decent loot.
The layout is very similar to the Nektropos Castle. However, you are forced to take a specific pathway due to blocked passages.
You need to pass through locked door or passage ways all through the zone.
Mobs randomly drop 3 different keys which range from copper, iron, and brass.
The different types of keys give random chance of loot or no loot for the chests they open (Iron open the small wooden chests for example).
Tinkering recipes (ex. Blueprint: Safety Recaller) have been found in one of the chest as well as boots.
Only the person opening the chest gets the reward.
There is not a single location that gives AA discovery.
After a few turns in a corridor you arrive in a room with several ghosts in it, amongst them can be Butler Balthazen. Kill them and touch the door. The Burning Soul will spawn in the firepit. He sends you some soul ember that you need to kill. After 4 waves of minions, he will attack you. Killing him will unlock the other door of the room.
Reach Sheila's room. A ghost sent by her father will arrive and kill her. She will respawn as The Cursed Remains of Shiela Everling (Yes there is a typo in this name in game) along with puppets. Killing them will unlock the door of her room.
Head towards Jenni's room, which is at ( -68, 14, -3 ) /waypoint -68.2, 13.5, -2.8. On the way, In the side room at ( -22, 14, 17 ) /waypoint -21.5, 13.9, 17.4, there is Groundskeeper Edgan for you to kill.
Head towards Crysta's room, which is at ( 75, 14, 2 ) /waypoint 74.91, 13.5, 2. To get there, go to the room at ( -28, 14, -29 ) /waypoint -27.8, 13.5, -28.94,where Captain Greeves sometimes spawns. Clear the room, then click on the teleporter at ( -21, 14, -31 ) /waypoint -20.69, 13.8, -31.4, which will take you to another corridor, on the Western side of the zone.
Head to Melanie's room ( 57, 13, -82 ) /waypoint 56.68, 13.42, -82.09. Kill The Cursed Remains of Melanie Everling after Melanie is killed by the guard. This will unlock the last door at ( 17, 13, -56 ) /waypoint 17.08, 13.48, -55.58.
In the now unlocked room you'll finally find Lord Everling, the last event of the zone. He has knockback and many 56v spirit wisps with him when he becomes aggro, so be prepared.