You can go to http://www.cruisedeckplans.com/DP/RC/mariner.htm to see samples of your cabin. It looks like you're at the begining of the curve for the hump. Not sure if your view would be blocked or if others can see in your balcony at that angle.
Teresa and Larry
#36-Carnival Splendor 9/16/12
7 night Mexican Riviera
#37-Allure of the Seas 11/11/12
7 night Eastern Caribbean
I was on the mariner on deck 9 with a jr suite and just loved it, huge closets, I was in awe! Nice big room, with a chair and ottoman and a couch and a large balcony with a lounge chair table and a regular chair, and the bathroom had a bathtub in it, You will enjoy the room. Have a wonderful trip.