Marriott International has concluded the final phase of expansion and renovations at its recently rebranded South Florida property, JW Marriott Miami Turnberry Resort and Spa in Aventura, Florida.

Formerly Turnberry Isle Miami, the resort is part of Marriott's Autograph Collection.

The extensive works have seen a doubling of capacity to 685 rooms, extensive renovation of amenities and the overhauling of two golf courses.

Central to the property's pivot to resort status is the vast new U$150m (€134.8m, £118.6m) Tidal Cove waterpark by Hydraulic engineering and aquatic design specialist, Cloward H2O.

Cloward H2O has created a waterpark across five acres, featuring a surf simulator, a 60 ft (5.5 sq m) tower with seven waterslides, a children's play area, adults’-only pool, and a 700ft lazy river ride, lined with tropical plants.

A surf simulator, called the FlowRider Triple, was installed by WhiteWater and can accommodate up to three surfers at once.

Flumes include a multi-lane Whizzard high-speed enclosed tube slide for racing, a family-style Boomerango raft slide, a double-tube Constrictor ride with high banking turns and the world’s first double tube Master Blaster water rollercoaster with gravity-defying uphill sections.

Tidal Cove also has a 7,800 square foot lagoon-style pool, with 25 cabanas, deck seating, beach entry and quiet coves.

The resort plays host to a variety of poolside amenities, including two dining outlets.

On the accommodation side, architects Nichols Brosch Wurst Wolfe & Associates, who are also designing the upcoming Margaritaville Hotel in Orlando, designed the hotel's recently completed 16-storey Orchid Tower, while New York-based studio Champalimaud created the interior design vision for its 325 new guest rooms.

Marriott says Champalimaud took inspiration from Miami’s art-deco history, focusing on clean, geometric lines, classic designs and simple details.

An ivory color palette with hints of blue and brown unites the project which is designed to evoke a 'spa experience' mirroring the natural aspect of the resort's South Florida location.

The renovated hotel entrance houses Soff’s, a lobby bar named for Don Soffer, founder of Aventura. The resort’s two 18-hole golf courses, Soffer and Miller – originally designed by Robert Trent Jones Sr – have been re-imagined by Raymond Floyd and the pro shop has been redesigned and expanded.

Marriott says Champalimaud took inspiration from Miami’s art-deco history, presenting clean, geometric lines coupled with classic designs and simple details.

A subtle ivory colour palette is present throughout, designed to evoke a spa experience and mirror the airiness and natural beauty of South Florida. Hints of blue and brown reference the beach-side location.

Guest rooms feature credenzas [sideboards] inspired by Italian designer Gio Ponti, known for his seaside resorts in southern Italy and in-room artwork curated by DAC Art Consulting.

Speaking on the renovations, Mitzi Gaskins, vice president and global brand leader at Marriott, said they "exemplify the vibrant culture of Miami and allow each guest to enjoy both elevated and sophisticated experiences".

The resort is also home to âme spa, which focuses on wellness, with a Himalayan salt room and Swiss shower.

The spa is a global showcase for the full range of therapeutic and spa treatment beds from Gharieni, including the Quartz Bed and Sound Wave System.