Oceania Riviera receives high praise for its exceptional service, outstanding cuisine, and luxurious accommodations. Most guests highlight the attentive staff, beautiful ship, and overall relaxing atmosphere. While food and service are consistently rated as top-tier, some guests note issues with excursions, internet connectivity, and occasional entertainment shortcomings. The ship is favored for its cleanliness, comfort, and value, though a few reviews mention crowded specialty restaurants and high excursion prices. Overall, the Riviera delivers a premium cruise experience, especially for those seeking a refined and relaxing journey.