We have just returned from a week's cruise with Royal Caribbean and thoroughly enjoyed the experience. We found the ship was kept very clean and lounges, bars and restaurants were bright and inviting. We had previously checked reviews online prior to our cruise and criticism had been levelled at the food quality. This was certainly not the case, the food in all eating areas was of good quality and freshness. Our stateroom was bright, airy and clean. The bed was comfortable and the room had plenty of storage space. The shower was on the small side, but that is the same on all ships. We enjoyed the itinerary, Mikonos was a delight, Kotor and Argostoli were interesting to do your own thing and discover the towns.
The only downside we experienced was a noisy cabin, the music coming from the centrum until the early hours of the morning kept us awake. Our advise would be to carefully select your cabin, be sure to be at least 12 cabins away from the open centrum area on any deck.