The apartment is perfectly located in Marais and you will find everything you need a food walk away. The flat is fully equipped and you will find everything you need. Antoine is a great host and will help you in case something is up.
For people travelling in a group of 4: The couch in the living room is sufficient for a night (max two) - but not more. You will start feeling your back (on the other hand you might get used to the squeaky sounds of every turn you make throughout the night).