If you're looking for an elegant, but still fairly relaxed evening, Lily Bar & Lounge is an excellent choice. Located at the center of the Bellagio, Lily goes beyond the typical bar/lounge fare. An intimate atmosphere is backed by sleek design cues like Spanish-imported stone tabletops, antique mirrors and comfortable leather couches with soft pillows. There is plenty of seating available so you can relax with some good company and a premium drink in hand.
Lily features plenty of specialty cocktails on its menu, which changes seasonally. It's fun to simply watch the mixologists prepare these drinks, which end up being as visually appealing as they are flavorful. Expect to see lots of patrons taking pictures of their Old Fashioned or one of Lily's various martinis with their phones.
Lily also has a DJ booth and several HDTVs located throughout the venue, so you won't be at a loss if you want to watch the day's game or, later in the evening, enjoy music from some of Las Vegas' best DJs.