DH and I had the room for our first cruise. It wasn't too bad, we were usually gone in the afternoons, so didn't have the noise problems, and with the late seating, everybody was usually out.
The downside was the fact that we could hear voices outside the door, and there always seemed to be a crowd outside our door. Didn't notice too much problem with heat or smell though.
I wouldn't do that stateroom again, however, and would rather go further aft.