My suggestion:

• create a single node with leisure=recretion_ground
• add the benches with two more nodes as amenity=bench
• add the wooden structure as building=yes

@Ludrol @openstreetmap

Looks like we have a tag for weather\_protection=pergola ? So maybe that on a bit of highway=footway+area=yes and mark the benches separately.
https://wiki.openstreetmap.org/wiki/Key:weather_protection

https://en.wikipedia.org/wiki/Pergola