The Greek text mentions the upper room,
attaching a definite article (the
) which suggests that it was a well-known location (Acts 9:37, Acts 9:39; Acts 20:8). Some commentators speculate that it may have been the room where Jesus and his disciples had their last meal (see Luke 22:12).1 This would make it the upper room in the house of Mary.2 Though one cannot say for sure, we know that it must have been a room in a wealthy area since it served to accommodate around 120 people.3 Upper rooms generally were the choicest rooms in the house since they were above prying eyes and away from the tumult of the street.4
13 And when they had entered, they went up to the upper room, where they were staying, Peter and John and James and Andrew, Philip and Thomas, Bartholomew and Matthew, James the son of Alphaeus and Simon the Zealot and Judas the son of James.