Our friends had a similar cabin on the Radiance and never complained about noise. They loved the cabin. Each cabin is configured differently because they are arranged around the front of the ship. Their bunk beds were in the left back corner of the cabin and they had a privacy curtain. They had to keep the curtains closed on the windows at night so it wouldn't interfere with the bridge navigation per the letter they received from the Captain.
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