The room is about 30' by 40'; it has no other doorways than the one you came in through. There is nothing else in the room. There aren't even remnants of decorations as there were in the main hall.
The chest contains two pearls that look to be quite good, and a small pouch containing 100 gold coins. There's also a leather headband studded with small iron rivets.
The darts seem to be in good enough shape that they could be reused, or at least most of them could be.