Location was great, less than 5 min walk from Notre Dame.
Spacious flat, matched the photos. Well equipped, Nespresso machine and they left some capsules which was a nice touch. No microwave. Some placemats would have been nice to avoid eating on the bare table.
Beds ok, did not sleep on the sofa bed.
Building has central heating, it was plenty warm when we were there (Jan 2023), which was pretty cold outside.
Windows are pretty old so not a lot of insulation from light (some thick blinds but do not fully close) and noise, but the neighbourhood is not noisy and in winter light was not a problem. Might want to consider a face mask if visiting in spring / summer.
They offer a 100 EUR transfer from the airport. But a taxi is under 40 EUR. Do your own math.
Contact with host was easy, they were responsive and friendly.
Overall a very enjoyable stay, apartment is on a high floor overlooking a nice quiet street, makes you feel like a local for a few days. Would certainly recommend it.