Would welcome suggestions!
Bateaux Mouches and Bateaux Parisiens are the big 2.
I agree with the previous post. Take an evening cruise (lights on). Have dinner at a great restaurant. Check: vedettes du pont neuf on google.
I agree not to do dinner... my favorite co of them all is Bateaux Parisien which docks by Notre Dame. Don't know what time of year you're going but I only like taking it if the the top level is open air. I don't like being enclosed looking through dirty windows.
Cheryl, please read my reply and others......by going to the "search" box at the top right side of this page, type in Paris Dinner Siene River cruise...you'll get past posters comments.