The phrase "a certain cafe" is correct and usable in written English.
It can be used when referring to a specific cafe without naming it, often implying that the reader may know which one is being referred to.
Example: "I met my friend at a certain cafe that we both love to visit."
Alternatives: "a particular cafe" or "one specific cafe".
A certain table in a certain cafe.
The New Yorker, February 13 , 1960P. 32 Mary, a middle-aged widow, drops in at a certain cafe, whenever she goes up to Dublin from the country.
Once, after Mr. Gore and Ms. Armistead had done a particularly hard job on the farm, the senator told him to take her out for a meal at a certain cafe.
When you're buying VPN or socks be sure that you choose a certain internet cafe or use a friend's help that can lead you to a certain internet cafe.
He becomes an accountant, & often meets with his father, a judge, & his sister, the writer, in a certain Bogota cafe - where they dicuss their projects & fantasies.
A Vassar graduate, having refreshed herself with tea and a sandwich at a certain Paris cafe run on the honor system, sustained, on approaching the cashier, a terrible feeling of gender-engendered indecision.
Researching certain cafe owners and styles allowed them to target venues where they hoped their baking would be well received and they gained confidence as orders were repeated and regular market-goers flocked to their stalls.
Bunny chow was created in 1940s Durban, South Africa, as a way for immigrant Indian plantation workers (who were often banned from certain cafes during the apartheid era) to carry their food to the fields.
It goes without saying that you will run into coffee snobs at certain cafes in SF, and when you do, you can throw a dart at a map and be in a block radius of several other places to choose from that have "latte jockeys" polite enough to take home to your mother.
She cannot return to certain cafes because that is where she used the toilets, and the memories horrify her.
For example, if start-ups congregated around a certain area, a local cafe might see more demand and they in turn need to get more supplies and hire more staff to cope.
