it's all about the experience. at any one time there's only a handful of people allowed due to some "rules". however, once you make it inside, the space becomes really great.
i am a huge fan of gin so part of my life's mission is to sample as many gin cocktails and kinds as possible. i must say although their cocktails are really great, i found them a bit sweet. the rest of the people i was with thoroughly enjoyed the experience so we will definitely come around for some more exploration.
update: went there again, found love with the paintbrush cocktail. delicious cocktail, not too sweet and packs a hell of a punch