It "feels like an exclusive British club" at this brick and limestone Georgian building that once housed debutantes attending parties at nearby Buckingham Palace. "First-class" staff make sure you "never have to hail your own cab. Decor is "crisp and posh"; black-and-white guest rooms have mahogany furnishings and baths with rain showers. The Library Restaurant, at sister hotel The Rubens at the Palacealso in the same buildingis "good but not memorable."