Is there a place to store luggage on Polish trains?
Yes, all Polish trains have a place to store luggage.
Which train class to choose while travel through Poland by train?
Economy travel class offers comfortable seats, generally arranged 2 by 2, with enough legroom. Business class offers comfortable seats, generally arranged 2 by 1, with more legroom and a table (either foldable or not if it's a table seat). If you usually work in the train, it’s better for you to choose Business class Seat.
What's the difference between first class and business class on Poland trains?
A first class seat is usually wider and often more comfortable, with more elbow and leg room, and there can sometimes be a more formal atmosphere. The majority of first class passengers travel for business, so they use their time on the train to work. Also in business class, food and drinks are typically restaurant-quality.