We had a great stay! We stayed only one night because we were catching the first train to the airport, but everything went well! Alex greeted us at his bar where we waited for the room to be spruced up. He was very hospitable, and the housekeeper was also very nice, both of them helped us out with the train timings.
Room was clean, the washroom was as well. In fact, it looks so much more better than the photos, though it is a tad small. The housekeeper showed us the common areas, though we didn't plan to use them. The neighbourhood has lots of cafes, Indian restaurants, kebab places, and was well lit & had plenty of people walking around.
All in all a great stay and we would definitely recommend if you're looking for a place at Gare Du Nord's doorstep.