The Coach Makers Arms occupies a corner of Marylebone Lane, run by the Cubitt House group across three floors. The ground floor is a proper pub, the first floor is a dining room, and the basement holds a cocktail bar.
That stack is the whole appeal. Come for a pint at street level, dinner upstairs, or a cocktail in the basement, which Cubitt House runs as a speakeasy-style room called The Clubhouse. Skip it if you want one simple thing, because the point here is moving between the three floors over an evening.