HOBOKEN, N.J. — Funds managed by Greystar Real Estate Partners have acquired Observer Park, a multifamily property located at 51 Garden St. in Hoboken, for an aggregate purchase price of $70.3 million. The seller was Invesco. Constructed in 1991, the 12-story building features 115 units. On-site amenities include a fitness center, package concierge, terrace with gas grills and lounge areas, indoor parking, a hospitality bar with Starbucks Coffee, 24-hour laundry facilities, dry cleaning pickup and delivery, and controlled-access lobbies. Brian Whitmer, Andrew Merin, Adam Spies, David Bernhaut, Gary Gabriel and Ryan Dowd of Cushman & Wakefield represented the seller in the transaction.