I was impressed with how smooth and quiet the ride was. The cabin was also very clean and had lots of space. It was nice to be able to charge my device to ensure I had enough battery for when I explored the sites after exiting the train.
I also thought the food options on the platform were a nice touch. The sushi I bought was better than something I could get for a comparable price in the US.
While I enjoyed the experience, next time I would spend the extra $100 and splurge for a first-class ticket.