Category 5C rooms on the Dream/Fantasy are on deck 7, forward and mid-forward and aft. We love deck 7 and prefer rooms near the aft stairs/elevators, so we booked a 5C for our upcoming cruise on the Fantasy. IMO it's a great category, but make sure you check the stateroom reviews to insure that the room you choose does not have any downsides.
ETA: What I love about deck 7 is that you don't have to use the elevators to get anywhere, and there are staterooms both above and below (vs. public spaces).