Human culture Edit
Shortly after arriving on Deep Space 9, Benjamin and Jake Sisko went to their quarters and found there were no beds. Chief Miles O'Brien told the two that a spare bunk was available from the Enterprise-D. (DS9: "Emissary")
Alien culture Edit
Cardassian beds were also found to be uncomfortable to Humans, but according to Vash, sleeping in any bed, even a Cardassian one was a luxury to her, since she usually slept on the ground in tents. (DS9: "Past Tense, Part I", "Q-Less")
As Odo was a shape-shifter he did not used a bed, though he had liked sleeping in one when experiencing humanoid life. While sleeping, he would lose his solid state and turn to a gelatinous substance, causing him to slide onto the floor. (DS9: "In Purgatory's Shadow")
Beds were mostly used for getting rest, either by lying quietly or sleep.
In 2266, Dr. Leonard McCoy ordered geological technician Fisher to bed. (TOS: "The Enemy Within") In 2364, Dr. Beverly Crusher ordered Captain Jean-Luc Picard to bed after he contracted a virus brought to the USS Enterprise-D from Quazulu VIII. (TNG: "Angel One")