The article mentions the large amount of storage containers in the room, something (presumably) not present in other rooms in the building. There's also pieces

The article mentions the large amount of storage containers in the room, something (presumably) not present in other rooms in the building. There's also pieces of metal and fabric consistent with being part of a chariot. That evidence, combined with the size of the room and presence of three beds, seems to be consistent with the idea that this is a slave's room.