As you'll see in the room reviews, some "drawbacks" (depending on who you ask) are the TV location, slanted porthole, no balcony, lack of privacy curtain, far forward location giving the potential for more ship movement, as far as you get from the elevators.....
They are HUGE. They easily fall into the "best kept secret" category because of their size. You will feel no crowding, no walking around each other, no need to hide luggage. Be aware of the drawbacks if they matter. If not consider them seriously.