Sorry don’t know how to put the image directly in my post:
http://img3.wikia.nocookie.net/__cb20080309023308/starwars/images/3/31/AnoatSectorMap.jpg
According to this map excerpt, both Hoth and Bespin (and the planet ISIS apparently) reside in the Anoat Sector. I always remember seeing Hoth and Bespin on SW maps being remarkably close to each other…