The listing really doesn't highlight how convenient things are at this studio.
Take the train from the airport as Claudia recommends it is cheaper!
Commute
RER diagonal from the apartment
M10 1 block away
There are:
two cafe/ restaurants right in front of the building. I did not get to eat here but great reviews on Yelp.
Also a halal place for cheap a sandwich with fries is 5 euro. There is a small fruit stand next to that.
There is also a Bakery (Biogrenelle) open 6am to 9pm. Get a fresh croissant or a slice of pineapple upside cake. The pineapple is so moist.

If you walk further 2 minutes, there is a laundry mat open until 11pm, 7 days a week.
Franprix ( supermarket) they have.premade sandwiches, lentils and dinners. I bought a chicken and potate serves 2 for 4 euros.
Its a 10 min walk to St. Michel where you will find Lebanese, Japanese,Thai and. more braisseries.
The apartment:
The place is very convenient and safe. its a very quiet neighborhood. The walls are thin! But after 10 or 11pm it is fairly quiet.
I like how the building has an elevator. I didnt have to carry my luggage up the stairs.
The toilet is in near the room a few steps away. I will say bring 2 things no matter the weather as the temperature drops at night:
1.slippers
2.a fleece zip up hoodie
The shower is also fairly small be doable as other reviewers stated. There isn' t much room to move around especially if you are plus sized. The hot water is also metered.
The bed is also slightly high manageable. I'm 5'2 so everything is high.
The room also has a hotplate and microwave and refridgerator to cook meals which is also great for budget travel.
There was only 1 hanger, but you can just hang your stuff on the rack.
There is a taxi stand if you need one outside the building.
I would definitely stay here again. Its safe and easy to commute and see the sights. Its a great price.
Claudia is very responsive and helpful.
The wifi is strong and you can also find wifi at most restaurants, but would recommend a sim card for commute in between stations etc. I did not get a sim and managed just fine. I would definitely get a cheap sim in the future though.