Not necessarily bigger, but the windows are nicer on Deck 6. I debated on Deck 5/starboard side or deck 6. I would have been happy with either. Deck 5 has a “secret” door that leads to the library. I thought I would use the library as my living room, but never had time to do that. Deck 6 would have been more convenient. The higher the cabin number, the better. Just be aware that some cabins are designed for 4.