Are you talking about going from the landing up? I don't think those are more stairs on the left. That's the ceiling over the stairs outside the room. You go up the short stairs to the hybrid stairs/ladder to get to the loft area.
I think putting stairs on the left doesn't work because you'd be walking right into the wall/roof. There's no standing space above that. In fact, that entire upper section is too low to walk in. I assume it was meant as a child's bed nook. They clearly just converted the attic into a child's bedroom.