Why is the bunkhouse so important to this novel? Which theme connected to bunkhouse?

Theme- Loneliness of the itinerant worker

The itinerant farm worker of the Great Depression found it nearly impossible to establish a fixed home. These men were forced to wander from ranch to ranch seeking temporary employment, to live in bunk houses with strangers, and to suffer the abuses of arbitrary bosses. George sums up the misery of this situation at several points during his monologues to Lennie - "Guys like us, that work on ranches, are the loneliest guys in the world. They got no family. They don't belong no place" (15).

Can you give me more details about bunk house and be more specific

The bunk house was a long, rectangular building. Inside, the walls were whitewashed and the floor unpainted. In three walls there were small, square windows, and in the fourth, a solid door with a wooden latch. Against the walls were eight bunks, five of them made up with blankets and the other three showing their burlap ticking. Over each bunk there was nailed an apple box with the opening forward so that it made two shelves for the personal belongings of the occupant of the bunk. And these shelves were loaded with little articles, soap and talcum powder, razors and those Western magazines ranch men love to read and scoff at and secretly believe. And there were medicines on the shelves, and little vials, combs; and from nails on the box sides, a few neckties. Near one wall there was a black cast-iron stove, its stovepipe going straight up through the ceiling. In the middle of the room stood a big square table littered with playing cards, and around it were grouped boxes for the players to sit on."

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“You can have them two beds there,” he said, indicating two bunks near the stove. 

George stepped over and threw his blankets down on the burlap sack of straw
that was a mattress. He looked into his box shelf and then picked a small yellow can from it. “Say. What the hell’s this?”

“I don’t know,” said the old man.

“Says ‘positively kills lice, roaches and other scourges.’ What the hell kind of bed you giving us, anyways. We don’t want no pants rabbits.”