How can I improve the nomination of a city garden

Recently I found a little garden in my city, called "Jardim do Lugar das Hortas". In portuguese, jardim = garden, and try to nominate it as follows:
Title of the Wayspot: Jardim do Lugar das Hortas
Location: 41.441442, -8.286278
City: Guimarães
Country: Portugal
The problems is that is was rejected for being a natural feature since there is no sign in the place stating the name of it.
But, when I go to Google Maps I found this:
Meaning that Google already considers this small garden in it's database for some reason.
Also I found this website:
Where one can see the same benches and vertical signs and so one, I put that along with other info in the additional information in nomination. I also made a 360ºphoto in the location.
I'm asking for your help in order to improve my nomination, because I think this is a valid wayspot, but without a sign on it people tend to reject it.
Best regards
Comments
Without a sign, it's probably not going to pass. You can try submitting sub-elements though.
I found the location on Google and looked at the photo sphere there, which I assume is one of yours. In that view, there seems to be a vertical slab by the benches which looks like it could have something written on it - that could be worth a sub, depending on what it is exactly.
Watch your own shadow.
yeah, only notice that much later
Unfortunately Niantic require Parks/Recreational Gardens to have signs, being marked on Google maps isn't enough. If there is anything non-generic (i.e. not benches, drinking fountains etc.) you might be able to submit those.
Although it's not ideal to have your shadow in the picture, reviewers shouldn't be rejecting the nomination for a small one like yours