The apartment of Olivier is beautiful, as well as on the photos. We (me and my mum) felt very well, at home and at the same time in Paris. Everything was very clean and tidy. You can take bus 31 directly from Gare du Nord, and the metro Guy Môque and bus 21 are just a three-minute walk away.
The apartment has shutters, so it is dark at night and it does not heat up during the day.
One drawback: the second bedroom is facing the street. It is a bit noisy for people who are sensitive to noise.
Great that the supermarket is at the next corner. There are many bars, restaurants and bakeries.
The walk to Sacre Coeur on foot with stopover over the Montmartre cemetery is very nice.
We would like to recommend Olivier's apartment to anyone and would love to come back. Check in and check out was very uncomplicated and flexible, just right for our travel times.
Paris was just great with this apartment.