A once-trendy Manhattan hotel housing migrants has continued to descend into a “free for all” of lawlessness and violence — where children are regularly spotted intoxicated, migrants and a former employee said.

One migrant father currently staying at the luxury Row NYC in Midtown described the 1,300-room hotel on Eighth Avenue, which was converted last year to help house the influx of migrants, as a “madhouse” after dark.  

“Come around 9 or 10 p.m., it’s crazy,” the father said. 

“People [are] drinking aguardiente and smoking weed outside all night since we can’t bring that in,” the exasperated parent continued. “The police have come and pushed them out some nights so now they gather at the corners.”

Nearby stores and restaurants also complained about the pandemonium occurring across the street, which in recent months has hampered their tourist-reliant businesses. 

“It doesn’t look good,” said Gustavo Rosario, manager of Iron Bar, about the hedonism on display across the street. “Now we open the window and if they are smoking marijuana, all the smoke [starts] coming inside. People get uncomfortable.”

Kids also have been seen joining the adults’ in their debauchery, according to the migrant father, who requested anonymity.

“I’ve seen 12-, 13-year-olds drinking and smoking outside — a lot of the Venezuelan kids with the men,” he said. 

“These kids… they don’t have structure or good role models,” the father added. “My kids are not allowed to follow that and hang out there. They know better.” 

Carlos Arellano, who said he previously worked at the Row NYC as a site administrator for seven months, shared his concerns for the children’s well-being. 

In interviews with The Post and Fox News, Arellano claimed he and his colleagues regularly found children by themselves — and often intoxicated. 

“Every shift…we all had multiple reports of kids getting drunk, doing drugs, everything,” Arellano said, calling the hotel “a free for all.”  

In his Friday appearance on Fox News, Arellano said employees were often concerned about their safety on the job. 

“They’re saying this place deserves to be shut down, that they fear for their life every day as well as I did,” Arellano said.

If a guest’s behavior was egregious enough to get them kicked out of the Row, Arellano said the city would merely process them at Port Authority — and send them to another shelter.

“Say a husband decides to beat his wife up. He will get kicked out and they will just process him into a single men’s hotel,” Arellano said.

“If you break the law, it’s not a ‘Well we’re going to report you to the proper authorities.’ It’s ‘Let’s give you a second or third hotel room and you still stay in the city.’”

Arellano declined to share why he was no longer working at the hotel, saying he had been advised by his lawyer to keep quiet.

A City Hall spokesperson said Arellano had not been employed by the city, despite him sharing a picture of his NYC employee badge.  

“Safety is our top priority and all of our sites have 24/7 security onsite,” the spokesperson said, noting maintenance staff regularly inspect guests’ rooms at the Row and that instances of violence are reported to the police. 

A frustrated Mayor Eric Adams recently said on a radio appearance this month that the migrant crisis is expected to cost the city well roughly $4.5 billion, with an average of 300 to 500 migrants arriving in the Big Apple every day.

More than 45,200 migrants who have arrived in New York City are currently living in city-operated or city-funded shelter facilities, according to City Hall. So far, the city has opened up 154 emergency shelters, including nine large-scale humanitarian relief centers to handle the continued flood of migrants.