The conference’s venue is Radisson Blu Sobieski Hotel, Warsaw: https://www.radissonhotels.com/pl-pl/hotele/radisson-blu-warsaw-sobieski
You are welcome to book rooms by clicking the links provided:
Polish version: link rezerwacyjny
English version: reservation link
to get accommodation with a special price offer for the conference participants of
302,40 PLN (standard single room; breakfast included, VAT 8% included);
342,40 PLN (standard double room; breakfast included, VAT 8% included).
The booking link is valid to 26 November 2021.