We have visited this bar on many occasions, we always book a table every time we travel to London. It is in a great location in the heart of Soho, very convenient for pre-theatre drinks.
It specialises in Negronis and they are just delicious. It is a small bar so I would recommend booking a table.
I've saved the best until last, the service. All the staff are just brilliant and so friendly and helpful. In response to an earlier review we are both well over 35 but have never felt discriminated against and have always received a very warm welcome.