Henri is a model host. He made contact with us before our trip and was helpful and welcoming throughout. (Henri helps his friend Alex (the owner) with renting out the flat.). Alex's flat is in a great location in Paris, in a quiet courtyard. The flat is spacious and light just as in the photos. The beds were comfortable. The bathroom has a brilliant shower and the kitchen would be fine for a spot of cooking (we dined out). The boulangerie for breakfast croissant is only 30m from the entrance -perfect. The flat is quiet with no street noise. It's lovely.
The details for the flat say that smoking is not permitted (good) but this doesn't seem to apply to Alex. The flat had a the strong smell of stale tobacco ingrained in the furniture, beds and pillows. It kept me awake the first night but reduced a little with leaving windows open. Given the elegance and intelligence of the flat, it seems surprising that Alex is a smoker. If you don't like cigarette smoke, this may not be the perfect flat for you.
Overall a great place, and a brilliant host, but I would probably choose somewhere else next time because of the cigarette smell.