I do not recommend staying here. During my stay, there was construction going on in the apartment downstairs that would literally shake the entire apartment, not to mention the noise. The hot water stopped working during this time and wasn't restored for at least 2 days.
Cleanliness
There were two broken light fixtures.
The toilet seat was not connected to the toilet (and couldn't be repaired).
The shower liner was not secured properly and water would leak from the shower on use.
There was sand-like dirt in the corner of the room by the window.
Accuracy
The apartment was small, but it aligned with the ad.
Check-in / check-out
Pierre was unable to meet during check-in, but the meeting with the building manager went smoothly.
For check-out, Pierre and I were supposed to meet, but he did not show up before I needed to leave for my flight.
Communication
Pierre would take a while to communicate, which was especially bad when the hot water went out. However, he resolved the hot water issue and the construction issue 2-3 days after I contacted him.
Location
The apartment is very close to Bastille, which is a popular area in Paris.
There are some restaurants and many fast food places (which may appeal to some people, but I preferred to eat better, especially since it is not practical to cook in the apartment).
The biggest problem with location was that it is on a rather small side street right off the main plaza and drunk people would come down the street to pee and throw up, leaving all sorts of unpleasant odors. There is also the back entrance to a seafood restaurant on the block, which also does not smell great.
There is a Velib station right on the corner.