The phrase "attic chamber" is correct and usable in written English.
It can be used to refer to a room or space located in the attic of a building, often used for storage or as a living area.
Example: "The old house had an attic chamber filled with forgotten treasures and dusty memories."
Alternatives: "attic room" or "loft space".
The interior would have comprised a hall on the first floor, with rooms on another two floors above, and attic chambers in the turrets.
The attic above the great chamber has a grand timber roof with arch-braced collar trusses, joined using an unusual system called "double pegging", which is only used in the Conwy valley during the late 16th century.
Then she's driven to the family manse, Trepassen House, a gloomy pile sans central heating that's encircled by menacing magpies straight out of "The Birds". The aforementioned housekeeper, Mrs. Warren, grudgingly shows Hal her bedroom, a bare chamber in the attic with bars on the tiny window and, as she will discover, the words "HELP ME" scratched into the glass.
Traditionally, unmarried daughters were kept in a special chamber in the attic called a lamin, off-limit to visitors and suitors.
In the late 1800s, John Scott Haldane (the older one) had an airtight chamber in the attic where he would inhale carbon dioxide and take blood samples; his daughter had instructions on how to open it should he pass out.
And on August 15th the supreme court, meeting just below its chambers in the attic of a Pale hotel, annulled her dissolution of parliament.
The second floor is made of four chambers and the attic consists of five small rooms.
"What we never see," she wrote in The Guardian, "is bedraggled drudges rising in freezing shared attics at 5 30 am; slopping out chamber pots, heaving coal, black-leading grates, hauling cans of hot water with hands already made raw by chilblains and caustic soda.
Also there is a smoke chamber in the stack in the attic.
His bedroom was in the attic.
