The most endangered species in at least one part of Buckhead are cougars, now that Beluga's extinct and Rose Bar has arrived. The owners young-ified the joint by replacing the piano and the Frank Sinatra with a DJ booth and Frank Ocean, plus tore out some walls to reveal brick columns, also what Marvin Williams writes for a local weekly newspaper.
The focus is on cocktails that feature housemade rose water lemonade, including cool, gin-based sips like Pimm's Lemonade with Nolet & Thatchers cucumber liqueur, plus the house specialty: shaken Distillery 209, St. Germain, ruby red grapefruit juice, and Peychaud's bitters, which gets garnished with a rose petal, so you'll love it... unless you love it not. But, you'll love it.
For on-the-rocks-ness, clutch a Rose Angel (a 'rita w/ fresh cilantro), or get zingy with the Jack Rose, which's apple pie moonshine, lemon juice, and Fee Brothers grenadine made w/ pomegranate, which the syrup was originally crafted from in the 13th century, back when people were super-into reducing systolic blood pressure and LDL oxidation.
The all-bottled beer selection doesn't get completely crazy, but does include Fat Tire, Session (Lager & Black), and an IPA, pale ale, and amber from Full Sail, so even though there're no more 45yr-olds fawning over you, you can still feel like a dreamboat.