"such a help" is a correct and usable phrase in written English.
You can use it when you want emphasize that something has been particularly beneficial. For example, "You have been such a help with this project."
Thanks to Ms Linda for bringing her team and for being such a help!
I feel strongly on that subject, because my wife has been such a help and inspiration to me (4).
The tabloid "was such a help to Trump during the primary and even the general," said Nunberg, who compared the weekly to a campaign mailer.
"This level of care takes its toll physically and emotionally, and having a facility that was part of the mosque would be such a help," she said, adding, "Not that my mother or mother-in-law would ever go there".
Because it's been such a help, over the years, to young people attracted to others of the same sex, to know they can't marry the person they're attracted to.
"If people wanted to get involved then coming to help with some more of the pruning and general labouring work would be such a help; it would leave more time for us to focus on jobs that are genuinely beneficial academically to the children.
Thank you for reading this BBC learning English team and thank you for building such a helping website.
Mike Padilla is one man who could have used such a helping hand.
ITIL has recommendations for implementing key services such as a help desk.
If such a shop helps you out, help them out by purchasing something there.
Would such a device help?
