Seeki.eu lists 40+ properties for sale and 15+ to rent in Altstadt.
The median asking price is €405,500, or €5,101 per m² on a typical 74 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 €880 a month, across apartment rentals that publish both a price and a floor area.
