HOW TO GET HERE
It is very easy to get there
You need to arrive on Hauptbahnhoff Duesseldorf (main reailvay station). Then you go by feet 600 meters or take a tram.
The Taxi from Duesseldorf Hauptbahnhoff costs about 5EUR, from Duesseldorf Airport about 30EUR.
For exploring the city there is a very good infrastructure in Duesseldorf and it is a flat terrain.