Aurélien's place is located in a great area (to reiterate, the location is amazing), close to a variety of metros, and a great food area. The apartment is nice and perfectly accommodating to guests, with a washer/dryer to wash clothes, and a lot of fridge space, and a great shower!
You only have to walk-up one floor of steps to get to the apartment, and the building is easy to identify as there is some artwork on the buildings front-door (people, most likely other tourists, stop to take pictures of it). For those to like to run, Boulevard Richard Lenoir provides for a easy loop, which allows you to also run beside the the Canal St. Martin if you go north.
The neighborhood is quiet at night, which is helped by the fact that the windows look into a courtyard. There's both a U Express and a Monop close by if you want to buy some groceries, and a convenience store right beside the building.
Check-in was easy as Aurélien's friend met me with the key, and check-out was also easy as I dropped the keys back with Aurélien at the apartment. While I was at his apartment, he was easy to get in touch with, and also provided his friend's number in case he was not able to respond quick enough.
I would definitely stay there again, and recommend it to any travelers looking for a great neighborhood to stay in while in Paris. Thanks, again, Aurélien!