We often check TripAdvisor website. They rate restaurants in different cities/towns based on customer reviews. You can read those reviews yourself to help with the decision. You can also check Yelp website but I will say all these have to be taken for what they are - someone else's review. One store clerk told me once that those who are upset tend to be more interested in telling the world than those who are satisfied and I think that is probably true. But it still gives you a bit of guidance.