Mid ship is ideal IF ther is a teter-tater effect because of high wave/swells. Ocean has great stablizers & you shouldnt notice very much differece no matter where you are on the ship. Another advantage of mid ship is you are 1/2 way to the front or rear of the ship. I've experieced a vibration once on the back of Golden princess but remember your on a ship. Personally I have no real prefrence. I enjoyed Ocean over Golden & I'm sure you will love it too. Have a great cruise.