I thought to try searching "public toilet" in Copenhagen, which I'm sure is something tourists search for.
It does show a few of them, but it also shows an apartment complex miscategorized as one, and misses several within the city centre. They are shown with various names ("Toilet", "Public toilet", "Public toilet for men", "Public restroom") so I think this is crowdsourced, rather than anything Google has made an effort to map.
Although the interface of https://www.openstreetmap.org/ doesn't have a way to highlight them, other interfaces (phone apps etc) can, and OSM has much better coverage.
It does show a few of them, but it also shows an apartment complex miscategorized as one, and misses several within the city centre. They are shown with various names ("Toilet", "Public toilet", "Public toilet for men", "Public restroom") so I think this is crowdsourced, rather than anything Google has made an effort to map.
Although the interface of https://www.openstreetmap.org/ doesn't have a way to highlight them, other interfaces (phone apps etc) can, and OSM has much better coverage.