This was our second cruise on the Oceania Riviera and we LOVE this ship! We boarded August 6 in Athens and the cruise ended in Istanbul. In 2012 we also cruised the Mediterranean on this beautiful ship for 10 days.
My wife and I are in our young 40's and our kids were 16 and 13. All four of us have cruised extensively (over 60 cruises for me) and have sampled many lines from Carnival to Holland America to Regent Seven Seas to Azamara etc. Anyway, we have many lines by which to measure against.
The Riviera stands out in my mind as what cruising used to be (or how I remember) when I first cruised in 1982 on a 18-night Los Angeles to San Juan cruise on the original Love Boat's sister Island Princess.
Our Penthouse Suite was very well appointed and clearly ergonimically amongst the best staterooms at sea. Our kids had a Concierge balcony next to our stateroom that was also well appointed. Bed sheets are the best I have experienced in a hotel or on a ship.