Considering the Ramada Magdeburg in Magdeburg?
A VT member wrote the following comment about visiting Magdeburg:
Ship Mill - Muehlenschiff by Mariajoy
On the Elbe, just by The Monastery of Our Lady is the ship mill museum. It was closed when I visited but it was possible to walk around it's deck and take a look at the huge water wheel. It seemed like a popular place for families with small children.