I am not sure that there could possibly be anything to complain about for a $5 burger, fries, and drink. And we're talking a REAL burger here, not a centimeter thin frozen patty. Unfortunately, I hate the kind of fries they make (personal preference though, right?) and my burger was cooked more than I like it (but next time I can ask for it more rare, right?). I think just based on that meal, I would have stuck at 3 stars.
BUT: I can tell that burger will be delicious if I get it less done. And I got fried zucchini that was YUMMMMMMY. And the owner had me taste the potato salad, which I don't normally really love, but have been craving since that moment. And the owner was as nice and friendly as can be.
So I'm giving them 4 stars... and going back for more this afternoon.