i work in koblenz & seldom take the time to appreciate it as a tourist. but it is a nice city. there are a lot of good places to shop, interesting statues & fountains, and generally a lively atmosphere. near the deutches eck (german corner) you'll find the ludwig museum. take a walk around the grounds, it's pretty! there is a ...
The place where the Rhine and the Moselle meet... Visit Deutsches Eck along the Rhine River promenade. The Ehrenbretstein castle is also good place to visit.
Koblenz is really peaceful with great people and great food on Gorresplatz.