!! BE AWARE: Underneath the studio is a very very loud Peruvian restaurant. We booked a stay for three nights and two of those nights where impossible due to the loud music of the restaurant. The last night they even had a party there with a mariachi band. We went down several times to ask them nicely to keep it down, but they just lied to our face, said it was 'the last song' and kept going until 1am.
Furthermore the entrance to the apartment (which is on the first floor) is very steep, almost like a ladder. I would not recommend people with disabilities or with small kids to use this. It's simply impossible, for instance, to get a stroller upstairs.
To end on a positive note: the apartment is located perfectly in the middle of the two best areas of Paris (Canal St. Martin & La Vilette). It has several metro stations nearby and finding a good place to eat or to drink is no problem.