We had sailed with HAL on 3 previous cruises. We chose this cruise for the itinerary and had just been on Celebrity Solstice six weeks prior to this one and so comparisons between them were fresh in our minds.
Where Solstice is clean crisp lines with what we thought were much higher ceilings, Noordam is lower ceiling, less open spaces, fine arts but darkened lounge areas.
Noordam did not come close to Solstice from the quality of their food, attention to detail and service of the crew.