Suite Key is a miscellaneous Story Item in Baldur's Gate 3.
A polished key engraved with the letters 'W.R.'
Properties
Miscellaneous Items
Rarity: Story Item
Weight: 0.01 kg / 0.02 lb
Price: 1 gp 
UID
S_PLA_TavernInvestigation_DesireDoorKeyUUID
c8feace1-e292-4fb9-bb98-2bae35020fc5
Where to find
Can be found on a dead halfling outside of the Waukeen's Rest building.
Usage
This key opens the locked door in the room with Counsellor Florrick on the upper floor of the burning building in Waukeen's Rest.