Seeki.eu lists 30+ properties for sale and 15+ to rent in Altstadt.
The median asking price is €265,000, or €3,381 per m² on a typical 84 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 €633 a month, across apartment rentals that publish both a price and a floor area.
