We cruised on the Marco Polo about 5 years ago when it was owned by Orient Lines. It was obviously not top class, but quite acceptable for the price. Now under Cruise and Maritime (Story Cruise Ltd), it has clearly gone downhill.
The same moderate cabins with their very poor soundproofing exist, but the standard of the food has markedly fallen. Breakfast and lunch for us are generally just fruit and salad, but the choice and quality of both were minimal. Dinner is therefore important to us and our food of choice is fish. Here the quality of the fish and its cooking were uniformly abysmal.
Cleanliness on board also left a lot to be desired and constantly searching for a clean glass or a cup without brown stained cracks was not very encouraging!