On all the three cruises we took on the Oasis/Allure we had cabins with a balcony ocean view and the cabins were quite adequate. My DW and I don't pack lightly but we had had enough space for a comfortable cruise.
I am ready for cruise #2 on the Allure.
Carnival Liberty New Year's Eve 2007
Liberty of the Seas 5/2008+11/2009
Allure 1/16/ 2011
Vision OTS 2-14-2015
Freedom OTS 3/6/16