Inside the hotel where Kim Kardashian was robbed

It’s known as the “No Address Hotel” — but five masked gunmen managed to find Kim Kardashian’s exclusive apartment inside the Pourtalès on Rue Tronchet.

The 19th-century neo-Renaissance manse is nestled behind the famed Madeleine church and near the intimate Caviar Kaspia restaurant, a Parish Fashion Week hangout, according to The Hollywood Reporter.

“The address is so secret that you will not find any information on internet. They have no website, no flyers, no telephone number and no street sign,” according to The Fab Day blog. “The only way to find them and to reserve an apartment is to use the old and classical word to mouth system.”

The blog post was addressed to the likes of Mick Jagger, Jay Z, Brad Pitt and Madonna, who had expressed the difficulty of finding a “luxurious and discreet” hotel in the City of Lights.

“The concept is much closer to a very luxurious Bed and Breakfast. Ok a BB for millionaires, rock stars and Hollywood actors! A NO address establishment,” the blog said.

Its nine apartments — two on the top floor and the rest in a modern building next door — rent for $1,680 a night for a 950-square-foot unit to almost $17,000 a night for the 3,700-square-foot penthouse, according to The Hollywood Reporter.

Kardashian’s husband, Kanye West, has owned one of the apartments for years, a source told Page Six. The couple stayed there during their wedding trip to Europe two years ago.

The former family home of Count Alexander Pourtales, which was built in 1839, was refurbished by French businessman Alexandre Allard, who also is a major shareholder in the Royal Monceau hotel, the site reported.

In 2004, he paid a reported $38 million for the building and an annex next door.

“It’s full of stars in there,” a waiter at a neighboring café told The Telegraph. “Kim Kardashian had been there for the past week. I’ve seen her come and go.”