We stayed in the owner's suite on the sky (8201), and had a wonderful time.
First some background information on us. This trip was a family vacation for my husband, our two year old daughter and myself. My husband and I are in our early 30's, and have both cruised a couple times with Carnival and Royal Caribbean, though this was our first time with NCL, and our first time staying in a suite on a cruise ship. We've travelled fairly extensively, and stay in various types of hotels depending on the needs of our trip, we're capable of happily staying at a Fairfield Inn or a Four Season resort, eating at McDonalds or at a 5 star restaurant. We're not fussy, and willing to pay a bit more occasionally for good service.
We chose NCL based on their suite perk options. I should note here that usually we stay in interior rooms or sometimes ocean view rooms, since we are not normally in our cabin that much. However, since we were going to be traveling with a toddler, I knew that in order for us to truly be able to enjoy the vacation we would be dependent on the extra space, ease of room service, and the extra attention that comes with the suite. If we were not to have splurged on the suite, we would have probably chosen a land vacation somewhere instead.
Great balcony, tons of room, but noise from the arcade above. Be aware if you are a light sleeper.