Counted among the most cosmopolitan destinations in South America, Buenos Aires is a city that blends the vibrancy of modernity with timeless sophistication, art, history and old-world glamour. Walk down many of the city’s streets and you’ll find that the eateries and boutiques that line them are alive with these qualities. But stay in one of the city’s leading hotels and you will find these qualities not only alive but personified. The following are five hotels that embody the breadth and diversity of…