The 313-room JW Marriott Marquis is reminiscent of a luxury hotel in Vegas: Everything is big, from the light fixtures to the bathrooms, and the array of amenities is so extensive guests might not have to leave the premises -- there are three restaurants, a pool, a basketball court, a virtual bowling alley, a 3D theater room, a golf school, and a huge fitness center. A good choice for business travelers, the hotel is one of the most modern hotels in Downtown Miami, and all rooms come equipped with desktop computers and giant 52-inch flat-screen TVs. For even more luxurious digs, you may consider Hotel Beaux Arts, Marriott's boutique hotel on the top floors of the building.