Who would lead Peter and John to the room where they would prepare the Passover?

Answer: A man carrying a water jug

A man carrying a jug of water would meet them; they were to follow him to a house with a large furnished upper room.

“He answered, “When you enter the city, a man carrying a jug of water will meet you. Follow him to the house he enters,”— Luke 22:10 (BSB)