partial/complete negation

[Phoo]

"We don't need all bedrooms in our house, so we will use one of them as a study."

I think this sentecse means "we need some bedrooms but not all of them", a kind of partial negation, am I right? How do you say for a complete negation then?

[Mister Micawber]

.
We don't need any of the bedrooms.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber

[Phoo]

Wow, that sounds very clear! Thanks!

[sunflower.baby]

How about "we don't need any bedroom"? It would be the same, right?
_________________
sunflower.baby
to be a better one!

[Mister Micawber]

.
We do not normally use the singular here, Sunflower.
.
_________________
Canadian-American native speaker
who teaches English for a living at Mister Micawber's
ESL cafe: Interview with Mr. Micawber