In Rome you must take your wife to dinner at the Piazza della Rotonda! It's were the Pantheon is. The scenery is breathtaking! Your wife will love it! Make sure your camera takes amazing night shots. In Ajaccio if you're a history buff, you could visit Napoleon birth place it's very close to the port. His monument is about a 30-45 minute walk. The beaches there although small are gorgeous! The water is crystal clear. There's also a casino in Ajaccio. Villefranche is nice, but I'd take the 10 minute bus ride to Monaco. The Prince's Palace of Monaco is an inexpensive tour, that is worth it in my opinion. Amalfi coast is heaven on earth and I haven't been to the other places. Enjoy your trip!!