Do not deal with this hostel.
They are rude and lie to you.
The manager Joanna agreed to refund me TWICE over the phone but yet in the end said she changed her mind and directed all my enquiries to Booking.com customer service. She was rude on the phone to me and said "why would you want a refund; You cannot buy a coke with 100pln!!" word for word. Appalling people to deal with. Lie to customers. Avoid them. There are so many nice bnbs in Gdansk. And with much better treatment if guests.