Superb time. Food and service were impeccable, as always; excursions were mostly excellent. Updates made to Sirena were nice improvements. The ideal cruise for mature adults (not recommended for children). Staff attentive, knowledgeable, helpful, pleasant, and engaging.
Our cabin was always immaculate and well-stocked; our butler anticipated our every need.
String quartet was the best we've encountered on Oceania.
Lots of on-board activities, day and night: Bridge classes & afternoon social and duplicate play, Bingo, Team Trivia, great enrichment lectures, cooking demonstrations, variety of music shows, country fair, golf & ping pong, etc. One can be as athletic or couch-potato-ish as desired. But you're always going to have excellent food and drink. We were too pooped at the end of each day's activities to take advantage of the evening - and late evening - activities!
Dining options are different on Sirena: Grand Dining Room essentially the same, but at lunch-time has a French Bistro vibe and menu. Toscana and Polo are combined into a Tuscan Steak House to make room for Red Ginger (as in the larger ships).
Sirena updates (not in sister ships in this category): in-room safe moved to more convenient location, makeup mirror movable (not fixed), bathroom completely updated with large walk-in shower replacing bathtub, larger sink & towel racks, & more storage area. New faux rattan cushioned chairs on balcony.
Lots of closet space, comfortable bed & linens.
Impeccably maintained by housekeeping staff.