We (family of five) just returned on Sunday 22 Dec from a 7 day cruise around New Zealand.
SUMMARY
Pros:
Meh. Cabin was functional. Old cabin in an old ship. We knew what we might be in for with an inside cabin. Didn't suit us. Back to balcony next time. Electric sockets European/UK, with renovated cabins have China/AUS/NZ. My partner found bed WAY too hard and small. Cabin was thankfully quiet but moved around a bit due to position on ship.