what he saw around him was an apartment shaped like half a donut , the whole of it , other than a tiny , port-a-potty-sized bathroom near the front door that bulged slightly towards what would be the donut hole , was one curved hallway slightly wider than narrow , with a kitchen in its center conceived in arrangement just well enough to walk through , and at the end of the hallway an oddly square-shaped and small bed that , when put into place , was pushed tightly against each touching wall .