The opulent, sedate, and tony belle of the Buenos Aires ball, this hotel will either please you to bits or make you run away in panic from its gilded decadence. Top-hatted bellmen usher you into a golden lobby where a white-gloved butler takes over and attends to your requests. The spa and fitness center are the only hints at modern minimalism in what is otherwise a wash of lavishness. Rooms are quiet and spacious. If you decide not to stay, you can still sample the refinement by stopping in for afternoon tea in the Winter Garden.