To get to Gobancho Children's Playground, exit Ichigaya Station on the JR lines and walk along the Kanda River towards Yotsuya. You'll see it along the way!
Gobancho Children's Playground is located at the end of a promenade leading to Yotsuya and features small playground equipment and a sandbox.
And, Gobancho Children's Playground has benches where you can sit and take a break.

Despite being a small park, there are five relatively clean two-seater benches.
Also, the park continues towards Yotsuya, and if you follow the path, you'll find six single-person benches.
Regarding congestion, I checked on weekends and holidays, and there were no users.
Around Gobancho Children's Playground, I saw people running and elderly people taking walks in Ichigaya.
Why not use it as a place to take a break and sit down when you're in the Ichigaya area?

