If I start at the beginning and end, the embarkation and disembarkation were the best ever and we have been on ovr 15 cruises with several cruise lines.
The cabins were roomy and well kept with plenty of storage and possible the biggest bathroom we have experienced. The food in the main dining rooms was excellent as was most of the service , althougfh the wine waiter was a little slow at times. We only tried the Jasmine Garden and were not too impressed but our brother in law thought it was wonderful so I guess that is down to personal taste. The buffet was as you would expect, plenty of choice. The entertainment was average cruise fare but the 'Elements' show was wonderful and not to be missed.
Having been on Celebrity, Princess, Royal Caribbean and Costa I have no hesitation at recommending Norwegian Jade. Again it is taste. If you do not want to dress up, you want to be able to dine at your pace and don't mind children and silly games around the pool than choose this ship. Otherwise another line might be your choice. We are certainly going again with Norwegian.
Perfect cabin. Great views of Venice as we sailed away. Large bathroom compared to other ships we have been on. The towel animals were always a delight. The steward was excellent and unobtrusive.