My family, that is myself, my wife and three grown up children took the overnight sleeper from Paris Bercy to Verona for the remarkable price of £26 each.
You have to book in advance for this and there are limited places at this price. Whist the accommodation is somewhat basic, we had a six berth-compartment, its hard to imagine getting any sort of accommodation at that rate in Paris, let alone one that allows you to wake the next morning in the land of Romeo and Juliet.
A second tip, take your own butties and drink onto the train- those sold on board are expensive.
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