Olivier was incredible. He made sure we had exact directions to his flat, he had recommendations for food and shopping and generally made us feel like "mi casa is tu casa" with room in the fridge and tasty toast, coffee and teas at our disposal.
His English is superb, which was a relief since our French is embarrassingly lacking. Because of this, we had zero miscommunications and every time we crossed paths, he was warm and helpful.
The room was spacious, the hot water hot and enough accommodations (towels, bedding, etc) to make us feel at home.
Olivier's flat was a wonderful "home" to return to after an exhausting day of Parisian tourism.