Kirolak;
As far as the bed direction i personally perfered north/south direction, i sleep better that way.
Where earth's magnetism pulls energies....not sure about that "Betson" could be true i don't know, i just know i sleep better facing North. Maybe someone could put us in the right direction here..
As for noises from time to time I, too, have loud but brief sounds occuring inside my head. Very realistic, as if the sound source would be in my head. It happend in the state between being awake and asleep in meditation only.....
Don't know what it is but think is my HS telling me to pay attention...lol
PUL, R.