A global real estate giant has entered Jersey City’s sizzling real estate market with a staggering $221 million purchase of two luxury apartment buildings, sparking fears of an escalation of rents in a city that is already among the U.S.’s most expensive to reside. The acquisition by Hines, is a leading global real estate firm with more than $93 billion in assets worldwide, of adjacent multifamily apartment towers in the Paulus Hook neighborhood is one of the largest purchases in Jersey City history. The Lenox and Quinn buildings, with a total of 408 luxury units with a long list of amenities,…