Where do you find the best gin martini? Bathtub Gin in NYC. This quirky speakeasy venue offers over 30 gin and 77 whiskey varieties, as well as other spirit staples, from around the globe. The bartenders will create a cocktail with flavours you like. Or if you're like me, and like your martini bone dry, then the hardest choice is which gin. And yes, there is a bathtub, but you will have to fight past the selfie-taking 20 something women, to get in. Open 7 days till late.