Use an info_landmark:
info_landmark
This allows you to have a seperate box the exact same size as the actual respawn to teleport and they will be teleported at exactly the same place away from the landmark. Note, rotations arent possible as far as i know but with teleporting that often shouldnt be an issue.
And yes, that VDC says its for level transitions. it also works for teleports as i used them in sg_platforms in css.