This grand five-star property with updated baronial décor is just two blocks north of Retiro Park in Barrio Salamanca, the city’s toniest shopping and dining quarter, with its broad, tree-shaded sidewalks. For families traveling with kids, there are adjoining rooms—a rarity in European hotels unless one is willing to pay substantially more for a suite. Kids (and adults) will also revel in the huge marble bathrooms with massive tubs. The Wellington is home to perhaps the city's best hotel pool, a large rectangular affair surrounded by lounge chairs in a spacious sun-drenched patio, complete with a lifeguard and beachy full-service restaurant nearby. Completing the urban resort experience are soothing massages in the spa (by Clarins) and dinner at the Michelin-starred Kabuki Wellington—one of six on-site restaurants.