A little help for a better orientation:

A.    Hotel Kurfürstenhof
        (one of our hotels)
B.    Poppelsdorfer Schloss
        (Palace of Poppelsdorf)/
        Botanical Garden
C.    Observatory
D.    Central Station/
        subway/busses
E.    Hofgarten / University
F.    Munster (cathedral/
        pedestrian precinct
G.    Market/City Hall
H.    Beethoven House
J.    Rhine Promendade
K.    Quarter of Government
L.    Museumsmeile
       Mile of museums
M.    Subway Station University
N.       Parking