Miami Beach mansion in the sky features private rooftop pool for $14.9 million | Photos Written by Florida Keys Mortgage Syndicated User on January 6, 2021. Posted in Florida Keys News. A two-story penthouse on the ocean, at 3737 Collins Ave. in Miami Beach, includes its own private rooftop pool. It’s listed for $14.9 million.#foridanews #fidelityhomegroup #floridakeysmortgage Previous Next