lynx pardinus: Today I got a very good description from a geocacher who DNFed this cache - he explained to me where he had looked for it and, alas, the cache was not at its place. To him / her, my earnest thanks.
The location of this cache was not perfect, since, a few months ago, I changed its hiding to protect the tree that sits in that small public garden. I must say I had my doubts the cache would endure - but it still did more than I expected. Now, it should be archived, so that other, newer projects can be placed in this area. It is time.
A last note. Every single time one logs "ghost finds" it clutters the owner's perception - it gives an owner the impression a cache is in its right place and doesn't trigger a maintenaince visit (not that I have been the best example on this, but I could easily have checked on this cache in August, when I was working from the Portuguese office). Please, refrain to do them.