I was confused because I could find any reviews since 2015. We were on the "MS River Navigator", although this page refers to Vantage River Navigator. I'm assuming and hoping I'm on the right page.
River cruise, NOT an ocean liner. CanNOT really compare the two. I believe the capacity is around 150 passengers as opposed to the thousands on ocean ships.
Typical small rooms and bathroom, but very adequate. Room service was great. Only one time slot for meals, all dress is casual. The meals were fine: breakfast buffet, lunch at 12:00, dinner at 7:00pm. The service was great, but the kitchen was at times, very slow. Dinner is typically salad, soup, entree, and dessert. On multiple occasions we did not get our dinner entree until 8:30pm or later. I imagine very hard to serve +100 passengers timely with such a small kitchen.