The phrase "a grim room" is correct and usable in written English.
It can be used to describe a room that has a dark, foreboding, or depressing atmosphere.
Example: "As I stepped inside, I was struck by the sight of a grim room, with its dim lighting and bare walls that seemed to absorb all warmth and cheer."
Alternatives: "a dreary room" or "a bleak room."
When we first visited the small storefront space several years ago, it showed all the signs of undercapitalization: a sparse, almost grim room with non-English-speaking personnel, no credit cards, minimal menu.
When she opened a thin wooden door that was almost directly off the busy lobby, and I saw the dark grim room with a saggy double bed, I decided to look elsewhere.
With one fateful appointment in a grim, grey room, everything I'd ever hoped for and dreamed of felt like it was taken away from me.
The most striking thing about "Wanda" is its textures: the grain of cheap wood in a ramshackle house, the cold metal of a coffee shop and the marble of a bank, the dank warmth of a grim hotel room, and, of course, the skin of its people, with all its power to allure and to revolt, come through with a jolting physical power.
(Her "Three Women," 2013, which poses naked girls standing in Beyoncé-like formation, recalls Albert Arthur Allen's naked chorus lines of the nineteen-twenties; in "Ashanti," 2011, a nude on a sheetless mattress in a grim, bare room assumes the position of the figure in Ingres's "Grande Odalisque").
Yet none of it struck him quite as much as the sensation that there was someone or something else in that grim room, both unseen and present, and coming for him as much as for anybody.
As the Republicans gathered tonight for a grim meeting in Room HC-5, impeachment was supposed to be the sole topic.
The show was beset by technical difficulties on the night I saw it, and even without them it wouldn't quite work – not least because the actions we are asked to undertake never feel necessary, and the surroundings of a grim little undressed room detract from the atmosphere.
The room changed from a grim and damaged industrial-style room into a bright, comfortably furnished play and family room.
Their tiny household, a grim but weather-tight room in a dilapidated tenement, had a color TV and a satellite dish.
