the location is reasonable, but it is not in the marais- it is about 1 1/2 miles away. the room is street level on an alley, and right across is a boys' school so there is noise from early in the morning. there are several hipster bars and restaurants so there is late night loud talking and arguing from drunk people. because there are many windows, but no sound insulation, it feels like every foot step and conversation is being held inside the studio- which makes for a very bad night's sleep.
the studio is clean and nicely decorated with a "IKEA" aesthetic. the pillows are small and might not be to everyone's taste.
the location was hard to find on arrival, and having to wait for 4 pm check in is not a great realization, especially if you are arriving at 8 am from USA. there is no accomodation made for leaving suitcases in a safe place while waiting for the room to be available, so i had to sit around for 6-8 hours in various restaurants until the room was ready.
there are two very hip and brand new hotels within half a block of the studio- The Fabric Hotel and Les Deux Giraffes. both have room rates about the same as the studio with the added advantage of breakfast, daily maid service, and noon check in. if i could have, i would have moved to one of them instead but there is no refund after booking and little recourse for dissatisfied clients with the Air BnB system. so, caveat emptor!