We will also be on the Serena from 9 Feb and also have a balcony cabin on Deck 6 at the rear of the ship!! we have had one cruise with Costa before which was OK but not brilliant...the food was good but not excellent...the entertainment was mostly dancing, singing, acrobatics etc. to get over the language problem. Brits were in the minority and some of our European cousins come across as rude and noisy! We had a suite on that cruise as it was my special birthday..but the bed was very comfortable and furnishings were nice. It was not as formal as some other ships and most evenings the mealtimes were quite fun occasions. It was mostly Philipino waiting staff which always seems to mean spontaneous singing during the mealtime!!! It wasn't our favourite cruise line but obviously nothing put us off because we are going with Costa again! I have heard that there is some vibration at the rear of the ship and of course if it is rough we will go up and down more than midships but that was the chance we took, as we've always wanted to try a cabin where we could watch the wake of the ship! I think we will be going with an open mind..we've never been on a ship as big as Serena so that will be new to us, but we quite liked the itinerary and got it for a good price we thought. Perhaps we will meet you there.