Originally Posted by
bruce80
I think specific seats can only be reserved at a counter (increased fee!), but I have never tried that.
It seems this should be possible -
also by phone:
Originally Posted by Deutsche Bahn
You can reserve adjoining seats for more than 5 persons or book specific seats for ICE trains at the ticket counter or the DB Travel Service Hotline.
+49 (0) 180 5 99 66 33 in Germany, other numbers available
here.