The German Wikipedia article (https://de.wikipedia.org/wiki/Deutsche_Botschaft_Pj%C3%B6ngj...) has some more details. Most interesting: unified Germany initially wasn't interested in diplomatic relations with North Korea, so between 1991 and 2001, the only country actually using the building as an embassy was Sweden (although Germany had a "Schutzmachtvertretung" during this time - not sure what that means, but at least the lonely Swede had some company).
In case someone cares, the term 'Schutzmachtvertretung' contains three words, Schutz = protection, Macht = Power/Might and Vertretung = Representation.
Yeah, apparently this refers to https://en.wikipedia.org/wiki/Protecting_power - Sweden is currently (or rather, I guess, was before the Covid pandemic) the protecting power for no less than 10 Western states (Australia, Canada, Denmark, Finland, France, Iceland, Italy, Norway, Spain, USA) in North Korea. And between 1991 and 2001 they were apparently also the protecting power for Germany.
