Edit: New answer after a lot more hints...
Exposition
Here is why:
"This is not a location" -> it sounds like a location, but is something different
"but if you specifically spelt me with an 's' you would spot me in several bedrooms" -> sexposition, well, google it yourself
"I could go on, but I feel that's enough of me for now." -> exposition means explanation, so enough hints for now
HINT 1: Add an s
HINT 2: no longer a location = ex position
HINT 3: position is synonym of location, see HINT 7, starts with p
HINT 4: reference to sex
HINT 5: enough exposition means enough explanations/hints given
HINT 6: a hint saying enough hints given is indeed a hint for our problem
HINT 7: see HINT 3
Old answer:
My first though after reading the question was
we need to find a word starting with an $s$ which can be found in a bedroom but without the $s$ it means "location" or is a "location"
But Hint 1 tells me
word -> sword
spelt -> pelt
so i can add $s$ or remove it
Hint 2 tells me
after removing or adding the $s$ it is no longer a location
Hint 3 tells me
it is not an exlicit location but a synonym
So after rereading Hint 1
I noticed, that "spelt" is a word from the question, so I searched again and found
$$spot$$
which is an synonym of location and after removing the $s$ we have $$pot$$ which of course in modern times is rarely found in bedrooms but it fits all the hints.