Lozak describes the layout well enough to have a good sense of things

https://imgur.com/a/ntnJ7ms

He leads you to where Jolly came from. You remember this room from your first time here:

This room is the great hall of the keep. It is two stories high, with stone stairs on both sides of the room leading up to a stone balcony at the west end of the chamber. Heavy double doors lead east to the castle yard, while two interior doors open to the west. Arrow slits look out to the north and the south.

At the west end of the room, below the balcony, a large wooden chair sits behind a wide table littered with papers and discarded plates. A second table, this one long and furnished with benches, runs down the middle of the hall. The walls are painted in green and blue, decorated with tattered banners showing nautical designs.

Not pausing, he continues up the stairs and leads you to a room at the end of the parapet. The door is unlocked, a sign of Jollys confidence. 

A large semicircular room occupies the western half of this floor of the keep. Three narrow windows look out over the countryside outside the castle walls. The room’s furnishings are very plain, including a hard-looking bunk, a small wooden table, and a couple of simple chairs. Several large chests occupy the room’s southern corner.

Olaerys enters the room and quickly looks out the windows for any movement, then closes the door after everyone is inside.  He looks for any writings on the table, then looks over the chests, looking for any traps and to determine if they are locked.  “Let’s see what these fathomers were taking from people.”  

Investigation : 6 

Still melancholy from the loss of the friend she knew too short of a time, Ankita follows the rest up to Jolly's quarters.  Seeing what Olaerys is up to, she heads over next to him and helps him with the chests.

Olaerys appreciates Anita’s help in investigating the chests.  

Investigation : 9 

Randall takes up position in the hall, watching for trouble, while the others toss the room.

The chests are surpsingly untrapped or locked, further suggesting Jollys firm grip here.

Grimjaw’s loot consists of 600 sp, 450 ep, and a pouch containing fifteen blue azurites (worth 10 gp each).

There are also some sketches of what can only be you, including a feral cat supposed to be Ankita and a good likeness of Shrek picking his own nose.

OOC: You know what they always say, You can pick your friend, you can pick your nose, but not your friend's nose!

As Olaerys and Ankita ransack the room for its loot, Shrek’s eyes start tearing up when he sees how much riches this monster was hoarding. Think of all the splendid mail carrying satchels he could buy with that amount of money! His simple mind wanders as he day dreams about how he’ll spend his share of the loot.

”Want Shrek ta carry dose jew’lls? Me keep ‘em safe!”

Olaerys holds the picture up to Shrek, nodding.  “Good likeness.  I’d say they have you pegged, sport.”  He rolls up the parchment, and Ankita’s as well.  “I’m gonna save these as a souvenir of our little visit here.  Let’s divide up the coin and you can carry the azurites Shrek.  Anything else in here?”  Olaerys walks back to the table littered with papers and starts to rifle through them, looking for “evidence.”

The Tiefling remains in the doorway, watching as Randall guards the hall and the rest ransack the room.  He doesn't offer any input; instead, he stays in place and watches as things unfold and fidgets nervously with his hair, twirling one finger in the black shock between his horns.  His bloodshot eyes dart around the room.  

Shrek catches the pouch of azurite jewels thrown to him by Olaerys, and then quickly stuffs it deep within his mail bag for safe keeping.  He then looks upon he new windfall of coins with that twinkle in his eye, like a kid opening up a much desired gift on Christmas morning, daydreaming of what treasures he's going to buy when they get back into town.

OOC: To simplify the allocation of the coins, I used this website to spread the loot 5-ways, which results in 57 gp for everyone.

After catching himself daydreaming, with drool literally spilling out of his agape mouth, Shrek whispers to the gathered group "Where to next?  Should'n we's go take care o' dis Skatter Peel (OOC: he's referring to Gar Shatterkeel) fella next?"

You don't find anything else in the room, except a spot that seems to gave water damage in the northeast corner, which appears to be a poorly concealed secret door 

Ankita thanks Olaerys as he hands over her share of the gold.  Then checking out the water damage spot, she finds the poorly concealed secret door and attempts to open it.

She opens the door easily enough and water comes splashing out past her legs, probably a bath tubs worth of water.

Old bookshelves line the walls of this room, but most are empty. One old shelf has been cleared and restocked with a selection of tomes. A single bunk sits under the narrow window at the far end of the room, near a small desk, a wooden chair, and a chest. The floor looks wet.

Olaerys walks in right behind Ankita, scanning the corners, checking for any movement in the room.  He walks over to the desk to see if he can learn more about these Fathomers.  

Not much is on the desk, aside from a book entitled "Oh me! Oh my! Olhydra!" with a beautiful rendition of a giant water elemental with pearls for eyes dwarfing a sailing vessel and sinking it. The look of terror on the captains face is exquisitely captured

"Urshnora's room."  Lozak says as they enter the domicile.  He looks around, nervously searching the room as the others enter.  When water splashes out around Ankita's legs, Lozak's eyes bolt open.  

"Urshnora!"  He shouts, pointing at the water pouring out around Ankita's legs when she opens the door.  "Urshnora!  Ooh!"  

Olaerys turns and looks at Lozak, saying “Who is Urshnora?  You said nothing about Urshnora…”  He looks about quickly, hand on his battle axe.  

Perception : 6 

Ankita whirls around as Lozak remarks, then looks down at the water around her legs.  She shrugs, then looks back to the tiefling, "It's just water, what is wrong, does water hurt you?"

She then sees Olaerys put his hand on his battle axe and she looks around, trying to understand what the threat is.

Perception  25

Randall brandishes his spear, but with no sign of any threat, he grunts exasperatedly.  "What are you on about?  Where is this Urshnora?"