Rhine Mosel Tour 3-4 days

Hello friends of the motorized two-wheeler, I plan with my wife a Rhine Mosel tour in May. I get on at Bingen, along the Rhine and Mosel to Trier.My question: who can give me some tips about sights on the route, which can be reached by the mopped or a short walk. We come from the area Stuttgart and both over 60, therefore no long foot marches as possible. Also tips about bikers friendly accommodation and nice refreshments would be sup He. I thank you in advance Martin