I haven't sailed on her but did see her in Moorea a couple weeks ago as she was on her round the world cruise. She is a somewhat smallish ship and looks her age. The passengers on her said that she was showing her age and there wasn't much going on but they were traveling to some great places anyway. Lots of lectures onboard and the average age was pretty high.
The Saga Rose is a cruiseship that caters to cruisers who are 50+. It has excellent service and some of the best shore excusions and lecturers aflloat. My in-laws sailed the Saga Rose last year and left today to catch her in New Zealand for a 16 day cruise.
She is older but still has a lot class and it has some great rates for it's cruises.
I have attached a picture of her in Bora Bora.