This is a problem for me, especially on a huge map, and most especially when my living quarters are basically in one corner of the map.
I wish I could set everybody up with more than one bedroom - one "Primary" bedroom to go to when they're near to it, and secondary or "Hotel" rooms that they can crash in when they're Urgently Tired and nearer to the secondary than their own room.
I also wish I could set up dorms which are "for whomever needs it tonight," to the same effect - IE, set up a remote mining dormitory in one end of the map, so the miners don't run to the mine in the morning, plink off one and a half squares of minerals, then sprint back to their bedrooms screaming that they're so hungry and tired they're gonna go psycho.
All of this can be addressed by manual bed assigning.
But if they're still only allowed one sleeping bed - UGH, the micro!
an assignation menu.
maybe something like this, you pick a colonist and right click on a bed, then chose, assign this bed.
so that colonist will only use that bed.
otherwise...
click on bed it will show the owner, and an option, public, private, prisoner.
so public, will allow anyone to use it.
private, only the owner or chosen colonist
and prisoner only prisoners.
or maybe two rows.
prisoner colonist
public public
private private
locked, no one can use it.