Home to pretty treasures, Anzio is Italy's best kept secret. After your splendid visit to Anzio, you can proceed to an important near-by city of Rome. Take a short trip from Anzio and set some time aside to explore the Rome. Dotted with places like Colosseum, St Peters Basilica, Pantheon; it will definitely be a good idea. Also, to reach Anzio, you'll have to take a flight to Rome; so its not really a detour. And even if it is, the city is worth paying at least a quick visit. A holiday in Anzio can generally be of 1-2 days.
Don't just take a trip, let the trip take you! Have a enjoyable time at Anzio.