We were in C748 on the Sapphire in October, the cabin on the Diamond is
identical with exception of decore. It is an outside double w/balcony, the
cabin is roomy enough has a fridge, don't expect it to freeze ice cubes but
it keeps things cool. The balcony is comfortable and will handle four people
fine, ours had two chairs, two loungers, and a round table that could hold
a dinner serving, in fact we had dinner on the balcony one night and it worked
out fine. Drawback is that from the balcony you can not see around an look
down the side of the ship, there is a stair casing about 10/12 feet wide, so your
view is limited to the back and straight sideways, did not bother us.
Another nice thing is that you are in the high rent district, there is a
full suite beside you, below you, and the penthouse is above you, and on one
side of you is a stairwell that is a service stairs so is rarely used, all in all
real quiet and secluded but as mentioned, it is a long hike to the real stairs
and elevators. We liked it so much that we have the same cabin this fall
when we do the same cruise again on the Diamond. I think from 1to 10 the
cabin is an 8, maybe even a 9.