[Tagging] How to tag this area

[OSMDoudou]

Hello,

I can't find how to properly tag this place. [1]

No name pops to mind to represent its purpose: forum, amphitheatre,
pedestrian, speakers corner, etc. don't correspond to suitable tags.

I see a "circle area made of steps where you can sit and meet people", but
that won't make a good tag... :-)

What do you see there ? How would you tag it ?

Thx.

[1] https://goo.gl/maps/toZ8QvVUB7w