My wife and I just returned from our second Uniworld cruise. The first was on the S.S. Catherine going from Lyon to Avignon in 2016. It was excellent and initially we were a bit concerned that the Castles along the Rhine (Amsterdam to Basel) cruise might not live up to our experience in the south of France. But it certainly did!
We spent 4 days in Amsterdam before boarding the S.S. Antoinette for the cruise. (a perfect beginning we recommend for everyone) We've read a few reviews complaining about the condition of the Antoinette - we have absolutely NO complaints about the ship.
We booked a French balcony cabin which was very nice. On our first trip we opted for a full balcony - which, as far as we are concerned was a mistake. The French balcony configuration on the Antoinette is exactly the same square footage as the full balcony. As on all river cruise lines, the staterooms are small but very functional. We had no complaints about the cabin, amenities, bath, AC, steward service, or anything else. All Uniworld ships are non-smoking except in specific above deck areas so there was no smell in the cabin. As a safety engineer, I was pleased to see that all areas of the ship are sprinklered with smoke detectors.
Very nice - quiet, comfortable, excellent bed.