I'm planning a cycling trip with some friends who are relatively new to touring. My wife and I have enjoyed a few trips to Germany and Austria and we like the comfort of cycling the radwegs. I'm considering a loop starting in Frankfurt, north along the Fulda and Weser to Bremen, over to Hamburg, and back down the Elbe to somehow end back in Frankfurt for 3 weeks in September. Has anyone done portions of this route? Any comments or suggestions would be appreciated. We are not camping but intend to find modest accomodation along the way.