Yes we were in 6664, the room was great. The best part about deck 6 is that it is so convenient to get to the room from the Esplenade and it was a short walk down the corridor to a door that go you into the upstairs of 270.
We had no issue with the obstructed view, stood up you could see the sea below, sat down you could look out at a distance. We heard no noise from the promenade deck below.
We have stayed again on deck 6 (canât recall the number for that one) as the saving in cost and convenience for deck 5 is a winner for us.