Don't plant caneberries next to walls.

The north wall is least suitable.

The other walls may be equally suitable, what kind of construction are the walls (how much will they reflect heat onto the plants). Do your walls have overhead eaves, and if so, how far do the eaves extend from the walls?

One is solid sheet metal. The others are all wood. Some are solid. Some are spaced like a picket fence. The wood ones are all either 4 feet or 6 feet tall.

I would use the metal wall if it faces east (morning sun only).

The wood walls are fine for east, west, and south exposures.
You do not mention eaves, so there would be no special watering problems.