I recently had the opportunity to travel with AMAWaterways on their Melodies of the Danube. We began in Budapest, Hungary and ended in Vilshofen, Germany, with many ports visited in between.
The room was very nicely appointed and sparkling clean. To my surprise I found umbrellas in the closet. (Nice touch) They had walking sticks for their guests and even some were equipped with a small fold down chair to rest. They had bicycles onboard for anyone who wanted to take a spin in the ports we visited. They absolutely thought of everything for every type of traveler.