Five years ago, I listened to live piano music and a cocktail at the bar at Four Seasons Gresham Palace in Budapest before going back to another hotel. This time, I got to stay for one night before our river cruise started and we got upgraded to a "I can't believe this view" suite. I felt like a completely different person for 24 hours. I arrived a jetlagged, bumbling mess and emerged feeling like I could do anything. It is one of the most breathtaking properties in all of Europe, especially the soaring Art Nouveau lobby. Built in 1906 by the Gresham insurance company of London, it was severely damaged in WWII and restoration did not begin until 1999, opening in 2004 as the Four Seasons. The hotel is right at the entrance to the famous Chain Bridge, so make sure and walk over at night to see the building all lit up.