In contrast to Esbjerg, Rostock in E. Germany is horrendous for cyclists. I was given a lift until I was free of the built-up area and then headed north east towards Rugen. The campsites marked on maps are fairly reliable but you can't assume they exist. Northeast East Germany is quite a tourist comer and has superb white beaches along its Baltic coast. Beaches of firm sand are, I discovered, wonderful for cycling.
Accommodation tends to have closed, moved or become something completely different.
I ferried back to Copenhagen, which is a truly charming city, and then headed south to the islands of Mon, Falster and Lolland. Mon is famous for its towering chalk cliffs backed by extensive beech woods. The best time to visit is in the morning when the early eastern sun dazzles the cliff face. The nearby naturlejrpladser is tranquillity itself. Luxembourg was another unexpected little gem.