DS and I have decided we want an adventure this summer, just the two of us. He is 11 and quite well travelled but normally we go as a whole family. We would love to visit Romania, maybe Transylvania and plan to travel from Bucharest by train. I really want to keep journey times as short as possible (2-4 hours each trip) to avoid whinging. We have 6 nights. Any advice about good places to visit, places to avoid and hidden gems (accessible by train) would be greatly appreciated.