The interior of the building (hallways and stairwell) was under going great renovation. entering the apartment during business hours was difficult with wet paint and wet tiles in a narrow staircase with construction workers.
The neighborhood is not the greatest, I felt okay walking quickly, but I'm a pretty big man.
After meeting locals and telling them my cross street, they were like "oh..."
That being said, there are multiple metro stops very close. Getting to/from CDG airport was a quick breeze.
The apartment itself is good, especially for the price, if you only plan on sleeping while home.