@The Harbinger of Ferocity Are you still in the hospital? Because there's no hallways in there. There's the front/store, the back/operating room, and a few side rooms containing their stock.
Convenient plot hole repair = 'The Red' isn't used to buildings, since he spends most of his time in the wilds. As a result he can't tell the difference between a hall and a room
Secondly, I thought there was a hall. Most buildings have halls, how else would you connect the rooms? If there is only front house, back operating room and a few side rooms for stock where have all the patients gone?