Q: Is room any distinguishable space within a structure? ¶
A: Yes.
Q: Was room literally for the storage of boxes? ¶
A: Yes, and trunks, portmanteaux, and the like, rather than for bedroom use.
Q: Is room separated from other spaces or passageways by interior walls? ¶
A: Yes, moreover, it is separated from outdoor areas by an exterior wall, sometimes with a door.