I've always thought Google reviews were pretty accurate if there's a large enough sample size... anything ~4.5+, I'll read the most recent reviews just for any red flags and filter out any dumbass "nOtHinG hAd AnY fLaVor" 1 stars. If nothing else, it's a green light to look at a menu and food pics, but don't usually regret choosing them.
Places in a ~4.2-4.4 range tend to be less predictable in my experience... some are those hole in the wall gems and others just aren't good at all.
And if you can't hit at least a 4.0, it's probably only worthy of a road trip or late night stop if there's really nothing better available.
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