FWIW, the submitted article links to two more in-depth articles from 2017 about the NYC prison in which Guzman currently resides, in the graf that reads: "10 South, the maximum-security wing of the Metropolitan Correctional Center, New York City's most impenetrable jail"
https://www.nytimes.com/2017/04/24/nyregion/el-chapo-complai...
https://www.nytimes.com/2017/01/23/nyregion/el-chapo-guzman-...
Google Maps/Earth view: https://goo.gl/maps/2Qp8Xt7D5Fw
I worked downtown Manhattan for several years and had no idea a high-security prison "tougher than Guantánamo Bay" was sandwiched right in there.