A $21 million loan will help reinvent the Jockey Club condominium complex in North Miami.

Executives behind Apeiron, a mixed-use project at 11111 Biscayne Blvd., plan to revamp the former nightlife hub with 121 luxury-serviced residences, a 39-slip mega-yacht marina and 90-room boutique hotel. Enhancements on the 22-acre site on Biscayne Bay also are proposed.