The phrase "a hellhole of" is correct and usable in written English.
It can be used to describe a place or situation that is extremely unpleasant or undesirable.
Example: "After spending a week in that rundown motel, I can confidently say it was a hellhole of filth and discomfort."
Alternatives: "a dump of" or "a nightmare of".
It wasn't always a hellhole of anti-social behavior.
Almost immediately, Heathrow became a hellhole of static queues and furious passengers.
GQ magazine portrayed it as a hellhole of testosterone and tattoos, where drunken oilworkers shower strippers with cash and get into fights because there's nothing else to do.
At the debate, her Democratic opponent, Terry Goddard, claimed that Arizona was losing business because people around the country now believe it's a hellhole of immigration-fueled violence.
In the eight years that they have wrestled over control of Chechnya, the Russian government and Chechen rebels have descended ever deeper into a hellhole of brutish behavior.
I personally think that this dangerous development was abetted by some of Trump's worst enemies on the left, who agreed that American society is a hellhole of inequality, racism, and violence.
(As has been widely noted, Trump once called Brussels a "hellhole," on account of its large number of immigrants — many of whom came from countries whose repressive leaders had joined him at the summit in Riyadh. He has said similar things about Paris: "No one wants to go to Paris anymore". When Trump was in Riyadh, though, he couldn't stop talking about how fancy the new buildings were).
The crater left is a hellhole, full of bits of men, and dying men, groaning and horribly open in the wrong places.
In the weeks leading up to publication of Amanda Knox's memoir, Waiting to be Heard, descriptions of her four years in a Perugia women's prison as a "trauma in an Italian hellhole of sex and debauchery" - as the National Enquirer put it - have become increasingly lurid.
Screenwriter Moira Buffini and director Stephen Frears have created a very English pastoral based on an interesting proposition: the countryside is not the sweet, picturesque place imagined by townies, but a seething hellhole of moral turpitude, where people will commit deplorable acts out of sheer resentment and boredom.
But the common theme is that they are awful: a digital hellhole of fury about minor domestic concerns.
