There's also no place like...

The Arcadia Hotel in Erkrath. 
http://www.arcadia-hotel.de/duesseldorf/the-hotel.html
I was welcomed back with open arms, hearty handshakes and a feeling of coming home. 
My room is the best I have had in Germany

With overlooks of the courtyard, Biergarten and creek that runs next to the hotel. 

You just can't ask for any better service it accommodations and the rate is reasonable and their breakfast buffet is the best I've ever had. 
I have grown to love Germany and its people and culture and have found the folks at the Arcadia Hotel Dusseldorf - Erkrath to be la creme de la creme of Germany!