Bonn is full o' hotels to fit your style, some of which, were built in the 1900's and hold historical significance for the city, so they are packed full of stars, but it also has any kind of hotel to fit your stay no matter what you're looking for.
Petersberg
Luxury Awaits!...
An der Casselsruhe 1
2.5km/1 1/2 miles southwest of Bonn, via Trierer Strasse