Thanks for your note! :)

What is the thing slightly south of it, that can be seen on the 2018 aerial imagery here? Is that part of the playground, too?
https://www.openstreetmap.org/edit?way=514544431#map=20/50.10789/8.70967

Or does that not exist anymore?


If the slide (and the sandpit at the bottom of the slide?) are the only things, I would still tag it as playground and additionally add separate playground=slide and playground=sandpit nodes inside it, see: https://wiki.openstreetmap.org/wiki/Key:playground