Friends highly recommended Avalon Waterways.
We arrived in Paris and were brought directly to our ship. After checking in we were able to walk to the Eiffel Tower for a few photos.
The ship was very nice. Our cabin was spacious and clean. I thought the food was good. We ate the majority of our lunches and dinners on the panoramic deck. Fellow travelers were pleasant and welcoming. Entertainment was enjoyable. I enjoyed almost all of the land excursions. I would have liked less bus travel. The guides were informative and accommodating.