The first thing that strikes you upon entering the Hotel Emperador is its magnificently ornate lobby, replete with beautiful marble floors, plush sofas, and gurgling fountains. The rooms are equally impressive: the basic rooms are about 450 square feet, and suites are double or triple that size. The decor is classic but not stuffy. Bathrooms have separate tubs and showers and gleaming fittings. There's an indoor pool, sauna, and fitness center. The 21-story building has unobstructed views of the Río de la Plata and the city skyline. The Emperador is a favorite among visiting dignitaries and executives for its low-key, high-class service.