Seeki.eu lists 8+ properties for sale and 35+ to rent in Altstadt.
The median asking price is €476,750, or €3,207 per m² on a typical 126 m², across sale listings that publish both a price and a floor area.
On the rental side, the median asking rent for an apartment is €800 a month, across apartment rentals that publish both a price and a floor area.
