What you need to know before traveling?

If you're going to stay in a hotel or hostel and go by train, you don't need to take a lot of stuff. Accommodation provides:

Bedding (sheet, pillow, cover, blanket);
Clean towels (for face, body and sometimes feet — separately for each guest);
Kettle and utensils (cooking and eating utensils, glasses and cutlery);
Blow dryer (from hair dryer);
Cosmetic set (tomorrow, shampoo, shower gel, toothpaste and toothbrush);
Tea, coffee, sugar and salt — available in the common kitchen.
What to take on a trip: a list
Remove from the list what is provided at the residence and add:

Documents and tickets (scan them and send them to your e-mail);
Cash and payment cards (save passwords, do not write them down);
Personal hygiene products, comb and wet wipes;
A change of underwear and socks;
Clothes (2-3 sets), shoes and warm clothes (depending on the season and duration of the trip);
Pharmacy bag and medicines;
Downloaders (for phones and devices).
Additionally, take headphones, e-book, player. And in summer, don't forget to take sunscreen, sunglasses and a hat.