Having cruised with Oceania before for a total of 63 days on two cruises, we knew what to expect. Small cabins (even the conceriage cabins have only 165 sq ft of living area) and a buffet that is overcrowded probably half the time.
That said, we got a really good deal on this cruise (free shore excursions, free gratuities, free WIFI, free drink package) so went ahead and booked.
First off, we noticed that our room never cooled off. We finally removed the duvet from the bad and slept under the sheet only. After two days, we asked if something could be done. After climbing up in the ceiling, the crew said everything should be OK. Well, then we had to start wearing our jackets in the cabin because it was so cold. Back to reception to ask for the second time if anything could be done. They came back, and the cabin was still warm, but not as hot as it had been previously. We just left the thermostat at its lowest setting, and that way we were able to sleep at night under two light blankets.