Spend an exciting day in Ostróda at our on-site Aqua Park. Each stay at Radisson Blu Resort & Conference Center, Ostróda Mazury, includes a three-hour complimentary visit to our indoor water zone, complete with a two-lane sports pool, a shallow pool for kids, three whirlpools, and a thermal spa zone with sauna and steam bath. After that, if you want to spend more time in the Aqua Park, there is an additional cost. During the summer, there is also an outdoor zone with a relaxation pool and two whirlpools.