Cabins are small. with little room to walk. The decor is very nice, with lots of mirrors to make it look bigger. Watch out for the mirror on the bathroom door that faces you as you sit down - not very appealing! Read entire member review.
We were on the River Ambassador which went in service in 1996 and refurbished in 2006. Our Amadeus ship was only one year old and I was thinking that the River Ambassador would seem old. But it did not seem old, in fact it seemed new. The decor was very classy with white and beige colors, the carpet looked new and the dining room was very elegant. All the cabins are the same size on the River Ambassador. Yes, they are small but very well layed out, lots of storage space and our suitcases and carry-ons fit under the bed. I'd say about the same size as an inside cabin on an ocean cruise ship. We never mind the size of the cabins as we are not in our cabins that muchjust getting ready for the day and changing clothes. A hint: I always travel with a couple over-the-door hangers and used two of them for our coats, and to hang the clothes we were wearing that day. They just help expand the closet space. Read entire member review.
We had the lowest cabin on the boat. It was a bit small, but tastefully decorated, comfortable with adequate storage. We had a large window (not a porthole). Shower was good, plenty of hot water and pressure the entire time. It was quiet, could not hear neighbors or engine.