I never met Sadok (only messaged through Airbnb), but him and his receptionists knew English well enough that I could get along just fine.
My lower review comes from the need of a deep cleaning for the hotel room. The room smelled like mold from a large, black stain around the window (most likely developed from moisture). The walls looked like they had previous spills on them and were covered with such stains. The bathroom is also in need of a deep cleaning as the shower head was calcified and some mold between the tiles was forming. But perhaps most annoying was the leaky faucet and having to use a bucket to collect the water beneath. The staff said they'd permanently fix the plumbing once I'm checked out though.
The location was ok. It's a far walk to the center (~35 mins if you keep a decent pace) but the area definitely felt riskier compared to other parts of Paris. What makes this place great otherwise is how close it is to Gare du Nord.
Overall, you get what you paid for. The price is respectable, but the condition of the place could be better to provide a more comfortable stay.