I suggest you consider the town of Bernkastel-Kues, which is centrally located on the Mosel between Koblenz and Trier, and it's very nice. http://www.meinestadt.de/bernkastel-kues/home http://www.bernkastel.de/e/index.htm and:

>1) what you think about seeing Bamberg instead of Nuremberg

2) what you think a person with only 21->22 hours of time should see in Bamberg<

22 hours are more than enough for visiting Bamberg, which is an absolute gem. Quieter and much more affordable in a single day than Nuremberg. http://www.bamberg.info/www_tks/homeen_268_89_7_f.htm

Leonardo from Italy