The Dome and its adjoining Art Deco cocktail bar Frazers on George Street are both nice. There's a club in the basement but I wouldn't recommend it. Grape (another bar) is a couple of doors down and the Opal Lounge (bar & club, open till 3 every night) are on the same street. Should you want to go down to Leith, the bars along The Shore are all nice - try the King's Wark, The Shore Bar and The Waterfront.