A memory colder than any winter

The hotel we visited this time was relatively newly built. My child wanted a bunk bed, which is why we chose this hotel. However, the room was very cold. So even though I turned the thermostat up to the max, it didn't go above 19.5 degrees as you can see in the picture. So I wore a long padded jacket when I slept. It reminded me of my cold weather training after a long time. Please take note.