If you enjoy the Palacio Real, you might love dining upstairs in a formal Isabelline dining room at Lhardy. Madrid’s elite has been coming here since Lhardy opened in 1839, but most people passing on the street have no idea that the formal rooms exist. That’s because Lhardy runs a carriage-trade deli on the first floor along with a bar serving sandwiches, assorted tapas, and ham and cod croquetas. (Think of it as tapas for lawyers and doctors.)