What type of luggage should I use, hiking backpack or rolling suitcase?

I am traveling through Italy by train (public transportation) to Milan, Venice, Florence, and Rome. What type of luggage do you suggest, a hiking backpack or a rolling suitcase?

Answer by Olivereindeer
I travelled around Europe with a back pack that also has wheels. I bought it in the US – brand called Pangaeia – it was excellent. Had a long retractable handle to pull along. It had a zip section which when you opened it had straps and a waist belt to turn into a backpack. It also had a ziip off front section that you could use as a day pack. There are not cheap however.

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