We thought this apartment was great. We did not read the instructions correctly, and there was a bit of confusion at the start, but, it was all fixed. We got the floors and apartments mixed up.
To make it clear, once you have the door access code, go to Apartment BC on level 5, the accommodation is Apartment B, level 7.
The apartment is actually bigger in real life than it looks in the photos, and you really can see the Eiffel Tower from the large windows - a very rare treat in Paris.
We were able to park our hire car, unload and return it to Gare du Nord, just around the corner, extremely convenient, especially if using the efficient Metro system to and from the airport, or locally La Chapelle is even closer.
This is not Paris' prettiest pocket, but, we love it and everything you need is nearby, including a cafe serving excellent coffee in a very local environment.
The flexibility to leave luggage is a major bonus and very much appreciated.