I've been in Paris one week for work. Bernard and his friend Francois are really really kind, accomodating and super organized.
The apt was tidy, clean, fully accessoried (microwave, kettle, hair-drier, soap, towels, wi-fi, tv etc) and comfortable. The building is in a strategic area, very close to the Opéra, Rue Cambon, Rue Saint Honoré, Galeries Lafayette. The closest subway stations are Opéra and Madeleine.
I am a smoker so I really appreciated the small balcony with its impressive view.
The apt is small so it is easier to warm (I personally used the heater only in the evening when I was home and while having breakfast in the morning), and the water was always hot.
I would totally recommend Bernard's apt to a friend or a colleague.