You can stroll along Harbor Worlds for relaxing water views when you're in Mitte-Süd. If you carry on walking you'll get to Weser-Strandbad for some more water views.
Climate House is just one of the attractions in Mitte-Süd, Mitte so you might want to stop by during your trip. If you want to experience more of the culture Mitte has to offer, head to Harbor Worlds, Mein Outlet & Shopping Center, and Zoo at the Sea.