A fairly large and very beautiful park, with a museum and an extensive walking area, ponds, fountains, small architectural forms. Even in the wettest and coldest weather, it was nice to walk there. Not far from the park across the street there is a monument to the Mermaid - in memory of those who died at sea - I also advise you to visit it.
and yes, I was in Kadriorg, aka Yekaterinburg, in September 2019. It's very beautiful. Lots of roses. Well maintained. Inside the Presidential Residence with sentries, you can watch their shift. A path leads from the park to the Baltic coast. It's worth a walk. On the coast, the monument stands from the time of the Russian Empire. There is a cafe at the entrance from the old town and a cafe deep inside, on the right side, there is some kind of large building, there is a coffee shop behind it. It's cool in the summer, so-so in the cold. There's a museum behind the park. It looks big, of course.
I definitely recommend this place to visit. It is very beautiful, well maintained, lots of flowers, lawns. Sculptures. Ancient trees. Catherine's Palace and the court garden - everything breathes greatness.