This JW property lives up to its reputation. Great service, modern, and Miami chic. The rooms are extremely clean, luxurious and have great views of the city and Biscayne Bay. Very short walk to Bay Side and Brickell.
The only thing that was a let down was the pool. There is no pool side service during the summer and it can be difficult to get beverages. Also, it's very difficult to get sun laying by the pool. If you're booking this hotel to use the pool, I would check out another Marriott property in Miami - JW Brickell.
However, if you're staying here for business or a romantic getaway - excellent choice. Not for kids at all so leave them at home.