This trendy spot is in Puerto Madero, a neighborhood marked by glass-front buildings that line the Río de la Plata riverfront. The celebrity-filled hotel is styled with an uncluttered lobby dotted with couches, each set on a carpeted island, and a ceiling-high screen backlit by soft violet light at night. Many of the 169 guest rooms and 28 suites and studios have private balconies; book the Diplomat Suite for a private outdoor Jacuzzi. Upgrades include a concierge and a secretary in the business center. The Continental breakfast buffet is complimentary; take fresh juice on the rooftop terrace during warm months. There's a heated pool on site as well. Kick back by shooting a little pool in the lobby or order a drink from the well-stocked White Bar.