Past and present coexist with remarkable grace in Buenos Aires; for evidence, one need only book a room at the Krista. Housed in a restored early-20th-century mansion, the property reflects its history in the elaborate moldings, wood paneling, and black-and-white marble floors that fill its public spaces. Stained-glass windows and doors open onto a series of interior courtyards lined by the hotel’s 10 simple yet colorful rooms. (The super-private Borges room, which overlooks the back courtyard, is worth the extra $30.) For a taste of the present, just step outside to the burgeoning Palermo Hollywood district, where some of the city’s hottest restaurants—along with the editing studios that give the area its name—have been setting up shop.