Bernie Sanders' hotel room must be kept at 60 degrees, have an extra blanket and a king-sized bed, according to his 'Senator Comfort Memo'

• Sen. Bernie Sanders likes a hotel room that's set at a cool 60 degrees with a king-sized bed.
• A new book details Sanders' travel accommodations during the 2020 campaign.
• Sanders' demands were laid out in a "Senator Comfort Memo," including his preferred snacks.

The temperature in Sen. Bernie Sanders' hotel room should be set to 60 degrees. Otherwise, he won't get a good night's sleep.

That's according to "Battle for the Soul: Inside the Democrats' Campaigns to Defeat Trump," a new book by the Atlantic staff writer Edward Isaac-Dovere published this week, which dives into the Vermont senator's travel accommodations during his 2020 presidential run.

If the thermostat wouldn't budge, Sanders, still adamant on staying in a cool room, would try other options. He once made his staffer sit by an open window in the winter until the room was "cooled enough," per Dovere. On other occasions, his aides had to call hotel management to override the climate control system.

During a trip to California, Sanders reportedly grew annoyed at a hotel worker who was unable to get the temperature below 65.

"So, Chloe," Sanders told the employee, per Dovere. "You don't want me to sleep tonight?"

All of Sanders' demands were laid out in a "Senator Comfort Memo," a list distributed to anyone involved with his travel logistics.

Sanders' hotel rooms must also include a king-sized bed and an extra blanket in the closet, preferably one that's dark blue and made of cotton, Dovere writes.

The room needs to be situated away from elevators and ice machines to ensure quiet, and Sanders likes to sleep with white noise, ideally coming from a fan stationed at the bottom of his bed. The senator once sent an aide in the middle of a blizzard to buy him a fan, according to Dovere.

The memo also detailed what snacks the then-Democratic candidate expected in his hotel room, including green tea with honey, red Gatorade, unsalted nuts, clementines, and a "healthy, low-sugar drink," which often meant a Naked brand blueberry juice.

Despite his particular demands for a room, whenever a hotel would offer to upgrade his suite, Sanders would usually turn it down. If he was given the fancier room, he'd swap with an aide, according to Dovere.