Gothenburg Humour?
More or less, the fake coordinates for this mystery is very suitable to get a hint of how to solve it. At least the building under the zero and the zipcode for the area. You need a great sense of Gothenburg humour though. And maybe study this text a little bit more if it is not clear from the beginning of how to solve it. No need to visit the fake coordinates if you know how to google, that's it.
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