I discovered that temperature affects taste.  Some mornings my coffee tasted better than others.  I happen to have one of those handheld devices that you can aim at something and see the temperature.  It was sitting on my desk and on a lark, the morning that coffee tasted really good, I pointed it at the coffee.  In my case the temperature was 131°.  I've experimented and found that hotter doesn't taste, just burns and cooler doesn't taste as good.
A few degrees cooler is fine but dropping below 120° seems to make a significant loss of flavor for me.

The sweet spot for different people will be different I assume.  Just something you might want to experiment with and extend to other foods or drinks.