We found the Liberty to be a good ship for our needs: 2 families with 4 children from 10 to 6.
While it wasn't as amazing as our previous Disney Dream trip, we actually found it to be a little more relaxing as we didn't feel like we had to pack our on board itinerary with meet and greets and other "stuff" to do. Service was impeccable...and maybe even better than what we experienced with Disney.
Kids enjoyed the Kids Club counselors and made friends with other children.
Location is great. Pool deck is just outside the cabin, easy to walk to the pool deck bars. Very little traffic outside the room. Great steward (Erlande). Room size was big enough...well within expectations. Nice that it adjoins with the neighboring room if 2 parties are together.
Cons: shattered but secure outer window. Disappointing. Deck 12 sun deck is right above you...we had one night of noise with people jumping above us apparently. The balcony is also exposed to people above you and we noticed someone had dropped some trash on our balcony from above. Also, balconies with connecting room do not open up together. Being on deck 11 also means you will be in the last group to debark.
All in all, I'd suggest this room as we found the location to be fantastic and out of the way at the same time.