Forgot to address the "cold room" aspect.
Karlin - you have to understand what it's like to live in the "deep South." I completely understand what Anne was saying. In the winter, most of us have our thermostats set on 68 or 70, and in the summer (it was in the 80's yesterday in Atlanta), most of us set our thermostats at 75 or higher. This is to keep the gas and electric bills at a reasonable amount. (Also, the a/c can only cool the house to a certain temp when it is in the 90's outside.)
I've had quite a few teen-aged dogs with advanced cardiac and respiratory diseases (including metastatic lung cancer). All of these dogs did much better when room temperature was around 68 (Farenheit - sorry, don't know celcius). They really struggle when temps are much higher than that. It is easier to breathe when the air is cooler and less humid. We talk about this alot in the yahoo canine CHF group.
In that situation, I kept my central air set at 76, but I put a window air conditioning unit in my bedroom so that I can keep that room at 68 to 70. These older dogs with compromised breathing always sought out that "cold" room. It meant that I had to sleep with two or three blankets in the summertime! I'm sure that this is what Anne was describing.