The flat is located in the heart of Marais and is therefore super central.
It is super tiny but fits one person perfectly.
The only thing: it is in the third floor and no way to escape in case of fire. But I guess that is Parisian standards. But if you are a person worried about it, this might be a problem.
Otherwise, communiaction was easy and fast and everything worked out with the check in and check out.
I have been in several air bnbs in Paris already and think that it is a little expensive for what you get.