Frankly, from my perspective, 3 out of 5 is very unfair to Iona. It seems to be driven by traditional P&Oers who prefer the old style P&O. We have in the past been put off P&O bye the older ships and went back to try the new style. And like it a lot!! In the past P&O featured silver service in the dining rooms, which seemed to us to include piles of over cooked veg! That's long gone. But our last experience on a freezing cold, not fit for purpose, Oriana finished us. Although we had one or two good, and enjoyable cruises, we found that Cunard offered a better alternative for the traditional British cruise product.
Of course, the clickbait title of the CC email is a PR puff, to be taken with a pinch of salt. Most CC emails come under the same heading! A cruise ship experience is only as good as the last cruise and we are on Iona from this Saturday to see if we still love it. For example, non availability of speciality restaurants such as Epicurean would make a big dent in our enjoyment!