I flew JAL NRT-BKK, and it was so hot I thought I was getting delirious. The FA, though, noted how warm I was and brought me iced down towels. Let's just say it was a long, long flight.

Also had an experience at the Mandarin Oriental Tokyo where I had to ask them not to adjust the temp on the A/C upwards when they cleaned the room. They stopped, and the room stayed a comfy (for me) 72 degrees.