Where did the Last Supper take place?

There are three verses that talk about the location: Mark 14:15 says, "And he will shew you a large upper room furnished and prepared: there make ready for us." Luke 22:12 says, "And he shall shew you a large upper room furnished: there make ready." Acts 1:13 says, "And when they were come in, they went up into an upper room, where abode both Peter, and James, and John, and Andrew, Philip, and Thomas, Bartholomew, and Matthew, James the son of Alphaeus, and Simon Zelotes, and Judas the brother of James." That is all the Bible says about the location.