Oh the rear cockpit is tiny, cramped, with very little forward view. It's the blackened out windows under the wing (they're usually clear, it's just this picture). Good view sideways, and a bit less cramped with the small extended footwell that you can see under the pilot's backside.
It is a bit of a 1 + occasional passenger aeroplane, you'd not want to always fly with a full size adult in the back, they'd start to complain. But occasional trips, or kids, are fine.
G