The apartment is great location, very near the metro (lines 5,6 & 7!) and numerous bus lines, so it is very accessible both to the tourist spots and a very easy commute to both CDG and ORLY airports. The apartment is clean and very efficient, even if it's a bit on the tiny side you will not feel tight at all. The place is very well designed and has everything you need; wifi, kitchen, television and it even has a washer/dryer in it. It is very close to the supermarket, bakery, tabac, internet store, laundromat and lots of cafes, bars and restaurants.
I also found it very safe, I walked a lot and got home after midnight and found in okay.
The hosts Adil & Delphine were very kind and was very personable. They responded to my emails in a timely manner and they made sure that I had everything I need to make my stay comfortable.
I would definitely recommend this place if you will be in Paris!