Know-How Exchange : Other

From https://thesaurus.com/browse/unique

Definition: alone, singular
Synonyms: different, exclusive, individual, lone, one, one and only, onliest, only, particular, rare, separate, single, solitary, solo, sui generis, uncommon, unexampled

Definition: one-of-a-kind; without equal
Synonyms: anomalous, best, exceptional, extraordinary, far-out, incomparable, inimitable, matchless, most, nonpareil, novel, only, peerless, primo, rare, singular, something else, special, standout, strange, uncommon, unequaled, unexampled, unimaginable, unmatched, unparagoned, unparalleled, unprecedented, unreal, unrivaled, utmost, weird*

"can count on the fingers of one hand" and "a bird in the hand is worth two in the bush" are two common phrases, but I do not think they are really what you are looking for.

Going back to English courses decades ago, and the only other quote that came to mind, is a stanza from Shakespeare''s "All''s Well that Ends Well." I got lucky and remembered enough of it to be able to find it quickly on the Internet:

Helena:
"Oft expectation fails, and most oft there
Where most it promises; and oft it hits
Where hope is coldest, and despair most fits."
All''s Well That Ends Well (II, i, 145-147)

Regards,

JH

My apologies for the computer glitch; only wanted to send the answer once. Please do NOT accept the ones sent in error! JH

I'm not aware of a colloquialism in American English that says what you're trying to say. Maybe the thing to do is just say what you want to communicate in plain prose -- "... we have 14 unique rooms."

being English, I would agree with the moderator's post. Just keep it simple and if it's unique - say it's unique. There's no phrase that comes to mind that speaks to what you are trying to say, so when all else fails - keep it simple and to the point! good luck!

Rare as hen's teeth?
Unique as a finger print?
"If the glove doesn't fit......"