I ve just done my check out and I have to say I was very happy with the studio. I ve stayed there for 4 months, it is really well located, very close to hotel de ville, rue rivoli, notre dame, marais (10 mins) and you also have 3 different metro stations( one of them is 2 mins walk from the ap) so you can basically get everywhere in Paris quite fast. The studio has everything you need, the bed is really really comfortable, the kitchen well-equipped and everything is clean. The bathroom is quite small but I am sure you won't find better than that in a studio. It is perfect for a student, or anyone else who is in Paris for a while. The area has everything you need as well, lots of shops, coffee shops, markets, boulangeries, supermarkets, drugstores, mcdonalds, quick and so on.
Lawrence was a perfect host, very trustworthy and organized, she even let me do a very early check out at 4 AM as my flight was really early.
The only bad side maybe was that you dont have a washing machine but in case you need it, there is a "laverie" less than 10 seconds away, it is right in front of the appartment.
Anyway, loved my time in Paris in this studio so do not hesitate if you are in Paris.