Where did Jesus say the disciples would prepare the Passover meal?

Answer: A large upper room

Jesus said the owner of a house would show them a large upper room, furnished and ready, and there they prepared the Passover.

“and whichever house he enters, say to the owner, ‘The Teacher asks: Where is My guest room, where I may eat the Passover with My disciples?’”— Mark 14:14 (BSB)