On the green stripe between the Turmstraße and the Junkerstraße, the Langer Turm is located on a small rise. You will be walking right towards it when coming from the main building and going towards the Königshügel. The Langer Turm is part of the medieval city wall. It dates from the 14th century. Some modern comfort has been added on its inside, but you should still prefer a rustic style if you would like to move in here. And you need to be good with stairs!
For more information and pictures, check out the Facebook page for the Langer Turm.