Bella Union: $5 Espresso Martini Tuesdays

Bella Union in Kips Bay runs a generous weekday happy hour Monday through Friday from 4–8pm with $7 draft beers, $5 bottles and cans, $8 wines and mixed drinks. The absolute steal: every Tuesday from 4pm to late, they serve $5 espresso martinis. That's one of the best happy hour cocktail deals in the entire city. The rooftop/American saloon vibe is an added bonus