The apartment is situated in Montmartre, near the station Gare du Nord. It is very comfortable if you plan to travel by train somewhere.
We felt a bit unsafe after 20:00 walking from underground station to the flat, but is only 3 mins walking. It is typical for the location near train stations.
The apartment has a cool design, everything you need to stay for 5 and more days. It was very clear and the host answered very fast and helped us as soon as we needed.
You can get to the heart of the city by underground or 20-30 mins walking to the Eiffel Tour or Notre Dam de Paris.