Radisson Blu Resort & Conference Center, Ostróda Mazury, offers two on-site restaurants: Grus, Stoke, as well as our Lobby Bar and Black Swan Club. Enjoy unique dishes made from the best local produce and cozy surroundings at Grus. Celebrate special evenings, romantic dinners, and meet with friends at Stoke If you are looking for an aromatic coffee, a hot cup of tea, healthy fruit smoothies, or a selection of delicious desserts, then head over to our Lobby Bar. Black Swan Club offers classic drinks and beverages, served by our wonderful bartending team.