This Air BnB is well located for accessing the subways and seeing the sites, a decent number are within walking range. it is small so i think this is suitable for a couple or single person. its far to small to have more then two people, even with the sofa bed. It is also out of the sun so even on hot days the Air BnB remained cool.
However, we did have issues with noise. The bedroom is below one of the main stairways for the apartments above so you can hear people walking up and down until late evening. There was also the sound of running water coming from the adjoining wall with the bathroom, it was constant all night, i assume this is a fault and not normal. It's advertised as a quiet place to sleep in a residential area, the permanent residents the flats above were quiet. but the flat opposite the Air BnB is another Air BnB and on one of the nights they were so loud i had to go out and ask them to keep it down. All this being said, things did quieten down by 1am
All in all, i think if you're going to be out all evenings enjoying the bar/cafe culture, this Air BnB will suit you well. If your looking for a early night for an early start so you can see all the sites Paris has to offer, i'd pick another.