"in the bar at the Tokatlian"

The Tokatlian was a hotel in Istanbul during the early part of the 20th Century, and possibly prior to that. It does not appear to be in business at present, although its closure date is unclear.

It was situated on the Grand Rue de Pera (later, Istiklal Caddesi, or Independence Street) in the area of Istanbul inhabited by the European and American communities.

In Agatha Christie's Murder on the Orient Express, there is a reference to Hercule Poirot staying at the Tokatlian.

Does anyone have more information about this?