What would make you trust a local food map?

I am building Fooglemap, a web map for finding affordable local restaurants. It is early, and the hard part is coverage quality: some cities and categories already have useful entries, while others are still thin.

I am trying to make that visible instead of pretending every location is equally complete. If you use food, travel, or local discovery tools, what signals would make a city page feel trustworthy enough to try?

I am especially looking for feedback on price filters, city/category pages, and a simple submission flow for affordable places locals know.