There is a lot to like about this apartment, but a few things people need to keep in mind...
the good :- fantastic location, great for different metro lines, heaps of shops and restaurants and walking range to many places. The apartment is roomy and comfortable and fairly stylish. Nicolas is available and helpful.
to think about :- no wifi and we found mobile internet slow and unreliable. No TV, old appliances - we had trouble with the washing machine and had to go to a laundromat, , no instructions for anything, and the door lock is a real fiddle (but maybe there is a trick we were not told about). Also there is no aircon but that did not worry us. The apartment is up three flights of stairs.
Despite these things we would possibly stay again due to the wonderful location in a convenient part of Paris and it being a roomy and comfortable place.