Habib's apartment was great. It is in a very central location, accessible by the metro and walking distance to major attractions like Notre Dame, the Louvre, etc. I was pleasantly surprised with the space of the apartment - it is larger than what I was anticipating for Paris. Overall it was a great home base for my first trip to Paris.
One note - I arrived at night and found the apt a bit difficult to locate (largely due to the fact that my phone was not yet working so was unable to access live google maps directions). When you book, make sure to discuss with Habib how to recognize where the apartment is!