I like deck 7 or 8 on Carnival ships. Empress and Verandah. How are the lido deck balcony cabins? Is there noise and disturbance from the Lido and from the spa areas?
LIDO deck cabins.
You are going to hear a lot of conflicting advice here about the Lido Deck. Your preferences are the deciding factor. As for me, I usually book a lower deck away from noise from the pool music & chair movement noise, sports deck pounding and late night theater rehearsals. One time my TA booked us on the deck with the front desk & it was not a problem except for two nights where the entertainment took place right there.
I choose deck two or maybe three. Some times we go higher depending on where the life boats are located. Some people like to be close to elevators but I steer clear of them, too. Really it is just a personal choice depending on your tolerance for noise, or walking concerns. Do you enjoy being close to all the action or do you enjoy your privacy & peace & quiet.
Use a good TA if you are still undecided.