If you are looking to stay in absolutely the best location at an amazing price - this listing can not be beat. The neighborhood is so close to everything, I only took the metro once on an early saturday morning to go flea marketing. Otherwise, everything you need is within a walk (Which is perfect in Paris!).
Yves was very responsive and easy to get a hold of.
My negative feedback would be that since the building was under renovation, the hallways were very dirty and dusty and the only window in the apartment was covered in a tarp, so there was little to no sunlight in the morning. Not too big of an issue for me, since I was out the door early each morning.
Also, the switch for the electric in the hallways did not always work, so the hallways were dark at night and once while I was there the electric went out completely, but luckily only for a few minutes.
That said - this location truly cannot be beat. Very much worth the price, if you are willing to put up with some minor inconveniences that come along with some construction (NO NOISE THOUGH!).