Yes, good air con....we slept well there.
Excellent Aircon we stayed there I both Winter and Summer and slept well both times.
Trust this helps
Excellent air conditioning. No complaints at all as far as we were concerned.
Yes, I seem to recall that it does.....but remember, the hotel is half way up a mountain, when we were there the weather was beautiful, lovely & sunny, but not hot hot.
I stayed here recently and there was a heat pump in the room.
Get an answer from Chateau Marlborough staff and past guests.