An update on my previous review (below). The place remains very unpredictable: some nights packed with a great crowd, other nights dead. But as mentioned below, the bar stays open till 1 or 2 am. The trick is to walk around the block and enter through the hotel. The place is often open, even though it looks closed from outside. They've lost some of their friendlier staff, but the food menu is decent (sourced locally in Marylebone) and the room pleasant.
* * *
This place is newish and has been trying to drum up business by offering 2-for-1 dinner specials. The decor makes it feel a bit clubbish but it's not crowded (at least for the moment) and well lit. Think of it as a quiet, elegant spot. I've only ever tried one bit of food here - the grilled cheese - and it was more than fine. But best till last: though the restaurant closes at 11 the bar stays open till 2 am. At last a civilized refuge after all restaurants in the area have kicked you out.