The Dutiful Sisters of the Edelweiss
Sitting quietly in the outskirts of the harbor, this supposed "convent" houses the Dutiful Sisters of the Edelweiss. In truth, however, the place serves those who ensure no one breaks the unspoken code of criminals—the Rogues' Guild.
— In-game description
Serves as the Rogues' Guild and currently lead by Jacke.
Rogues' Guild Lore
Once, an organization known as the Upright Thieves patrolled the back streets of Limsa Lominsa, ensuring that no brigand break the unspoken code of conduct. The group drew from the most able members of pirate crews, and favored the agile and sly. With their chosen weapons—rope-cutting daggers they used during their days as sailors—the group devised skills of the blade to punish the guilty and reclaim plunder taken unjustly from fellow Lominsans.
After Admiral Merlwyb’s decree banning piracy, the Upright Thieves became the Rogues’ Guild. Yet their purpose is unchanged, and they continue to keep the peace of Limsa from amongst the shadows. Their guild hall is likewise clandestine, masquerading as a convent of the Dutiful Sisters of the Edelweiss. 
- Encyclopaedia Eorzea: Volume I, page 104