How is Ausable different from other secret agents?

Ausable was different from other secret agents in more ways than one. He had a small room in the musty corridor of a gloomy French hotel. It was on the sixth and top floor and it was scarcely the setting for a romantic adventure. He was extremely fat. Inspite of living in Paris for over twenty years, he spoke French and German only passably and had an American accent. Instead of getting messages slipped into his hands by dark-eyed beauties, he got only a telephone call making an appointment. In these ways, he was different from the conventional notion of a spy.