Which sentence states a fact?

 - The city of Dubrovnik, Croatia, located nearly 250 miles from the capital city of Zagreb, is better to visit during the summer festival season.
 - The city of Dubrovnik, Croatia, once had the third-largest navy in the Mediterranean.
The first sentence states a fact. It can be verified by looking up the history of the largest naval forces in the Mediterranean.
The city of Dubrovnik, Croatia, once had the third-largest navy in the Mediterranean.
The second sentence states an opinion. Better indicates a personal judgment.
The city of Dubrovnik, Croatia, located nearly 250 miles from the capital city of Zagreb, is better to visit during the summer festival season.