The worst journey I've ever had is the one to Milan. 

First of all we missed the train. We all woke up late so we arrived at the station when the train had already gone. Without us. 

Luckily there was another train we could take, but we had to wait an hour and a half. 

Next thing, the train was late so we lost another half an hour. So bad! 

Then we arrived at Milan where we had problems with the hotel  because we were late. We had a discussion with the manager, and finally we got a room. Not the one we had booked, but it wasn't so bad. 

It was really a nightmare.