I've done Krakow to Prague and Prague to Zurich and both of those were fantastic experiences. I've also done Verona to Paris which I would rate less highly - th

I've done Krakow to Prague and Prague to Zurich and both of those were fantastic experiences. I've also done Verona to Paris which I would rate less highly - the Thello is significantly more expensive for a less comfortable train, additionally we were stopped and all passengers checked on the French border, which hadn't happened entering either the Czech Republic or Switzerland.