Bellagio and Varenna are two of the most picturesque destinations in Italy. Bellagio is renowned for its cobblestone streets, quaint cafes, luxurious boutiques, and a variety of outdoor activities such as hiking, biking, and boating. Varenna is known for its stunning Villa Monastero, surrounded by lush gardens and home to some of the best seafood restaurants in Italy. So it depends on what you are after. If I had time to see only one of the two towns, I would personally choose Bellagio.