River Duchess is the final vessel of the River Queen-class series, which also includes River Queen, River Empress, River Countess, and River Princess. The ship features three passenger decks and a sun deck, plus an elevator and a launderette. The cabins are outfitted with modern amenities like flat-screen TVs, DVD players, air conditioning, hotel-style beds, and armchairs, with suites offering additional perks like in-cabin fridges, slippers, sparkling wine, and fresh fruit. The atmosphere is casual, with guests gathering in the lounge or sun deck, and a library, beauty salon, sauna, gym, and computer station available for use. Open-seating dining offers regional cuisine, with wine available for purchase. Dress is resort casual except for occasional "formal" events. Smoking is allowed on the sun deck only. Inclusive fares cover gratuities for onboard and onshore services, including pre- and post-cruise extensions. River Duchess offers 12-28 day cruises from Amsterdam to Bucharest, Vienna to Amsterdam, Vienna to Bucharest and vice versa.