The Hyatt has preserved the landmark Plaza Hotel's 19th-century Spanish colonial facade: a grand pillared entrance and a wide veranda that extends to either side of the street. Inside, however, it has all the modern comforts; minimalist bedrooms are softened by plump white pillows and duvets covering the simple ebony beds. Rates include use of the gym and spa, plus a great buffet breakfast. Lunch, afternoon tea, and dinner are served on the gracious terrace overlooking Mendoza's main square. A two-story wall of wine separates Bistro M, the restaurant, from the lobby.