Could this quest be changed to work in all of Aranna please, or have its instructions changed to clarify? When I enjoyed some herb at the top of a mountain that apparently doesn't count, I had no way of knowing why the quest didn't complete. From the description it sounded like it should work anywhere in the region, especially as mountains are an Aranna distinctive and all or almost all Aranna streets have peaks in the background.
I tried to complete this quest at Tamota Trill, which is one of the loveliest streets in Ur and feels more mountainous to me than the street where I eventually succeeded.