Welcome to Ada Ohio, one of the best places to eat while you are here is our Mexican restaurant, El Campo. Welcome to Ada Ohio, one of the best places to eat while you are here is our Mexican restaurant, El Campo. Welcome to Ada Ohio, one of the best places to eat while you are here is our Mexican restaurant, El Campo. Welcome to Ada Ohio, one of the best places to eat while you are here is our Mexican restaurant, El Campo. Welcome to Ada Ohio, one of the best places to eat while you are here is our Mexican restaurant, El Campo.