Miami beauty entrepreneurs Josh and Jenni Coba are listing their Sunny Isles Beach, Florida triplex for $59.5 million. The smashing beachfront residence, with a private pool, is known as Villa Eterna Mare. Completed last year, it comes turn-key ready, with all furnishings included. The villa is located at 17975 Collins Ave. — a 52-story tower with a lobby designed by the late Chanel legend Karl Lagerfeld — and part of the Estates at Acqualina at Sunny Isles Beach. The Cobas co-founded European