The Westerdam is a new "big" ship. I'm only going to comment on the pros and cons. Pros: lovely service, great Indonesian staff in the dining room, excellent cuisine, very entertaining shows. Cons: If, like me, you love to sit on the Promenade deck or some other nook and cranny and enjoy the sea with a good book, you can forget that on this ship. Horribly noisy air vents are everywhere and quietest place on the ship is the inside Lido swimming pool with tons of people. Everyplace else is hopeless. For this reason alone I would not sail her again.
Secondly, the design is frankly irritating. Instead of a soaring centrum, here is this tiny affair with a chandelier that is longing for more space to show itself off. Instead, now in the centrum we have the "separate, pay-for restaurant" taking up a lot of once beautiful public space. The show lounge is irritatingly heavy, and puts one in mind of an old Studebaker. The carpet throughout the ship is garish orange and dark blue, making some stairs difficult to maneuver at night. There are some gorgeous art and decor pieces to be sure, a couple of wonderful, inlaid marble floor medallions, and then you come to the aft Lido pool where what at first appears to be a blown-up kid's pool toy is perched on the pool. Folks, this is art. What were they thinking?
As to cabin...we had an outside cabin on the main deck #1122. That cabin and I imagine at least eight others along there are subject to the clamorous noise from the kitchen galley above, together with the scraping and bundling around of the manifold deck below. Impossible! These cabins should only be sold as "noise obstructed".