'Upper Room' in the Bible

When they had entered the city, they went upstairs to the upper room where they were staying [indefinitely]; that is, Peter, and John and [his brother] James, and Andrew, Philip and Thomas, Bartholomew (Nathanael) and Matthew, James the son of Alphaeus, and Simon the Zealot, and Judas (Thaddaeus) the son of James.

During that time it happened that she became sick and died; and when they had washed her body, they laid it in an upstairs room.

So Peter got up [at once] and went with them. When he arrived, they brought him into the upstairs room; and all the widows stood beside him, weeping and showing [him] all the tunics and robes that Dorcas used to make while she was with them.

Now there were many lamps in the upper room where we were assembled,