We were just discussing on a different post, but I do believe this deserves its own topic. Mods will probably move this to Nomination Support rather than Review Support though. Would you be comfortable sharing the location so we can see what this looks like on Google Maps?
I believe the appeals reviewer saw what I see in this photo, just a row of mailboxes. That would just be infrastructure and would not meet the criteria of a great place to exercise, explore, or be social.
There are areas where there just isn’t anything eligible to submit. Wayfarer is much more fun if you are going out to find great destinations rather than trying to get a Pokestop where you want one.
Here is where the previous conversation began: Nominations are passing and not becoming Pokéstops - #6 by Himitsu777