We met a lady when we were in Grand Central Station (don't all great stories start like this??) and she suggested that if we wanted to go for a drink we should go to the Campbell Apartment. She warned the cocktails were expensive but it was worth it. And she was right. It's very dark in a London club sort of way with lots of wood panelling and leather sofas. The bar man was chatty and funny and the cocktails were great. Definitely worth a visit, but don't stay too long or your bank manager may not like you!