Amongst many Sydneysiders, Kuleto's is an old favourite. During happy hour (6 pm to 7.30pm Monday - Friday and 6pm to 7pm Saturday), the bar's famous cocktails come at 2 for 1. And let's be serious - the cocktails are why people come here. They are universally lush, rich, alcoholic and thick, which is exactly what I want in a drink! I'd whole heartedly and unreservedly recommend the Red Corvette - given the prices in Happy Hour, you'd really be silly not to get two!
It can be extremely crowded - like, standing room only crowded, but it's still worthwhile; the private courtyard (functions only) is a step up from inside.
The crowd is all Newtown, which is hardly surprising given its location - but many people make the trip out of their way to come here, including myself. Definitely worth it - the drinks are the yummiest!