This is a beautiful, well-appointed apartment in the heart of the Marais. There are two smallish bedrooms, one of which is down a spiral staircase flight, and other of which has a bunk bed. There is also an upstairs sleeping loft, with a sloped and low ceiling, which sleeps two and has air conditioning (the rest of the apartment does not).
The apartment is a floor-through, with two small toilet rooms and two small shower rooms (all have sinks as well). It is filled with books and charm, with a large dining room table, and a comfortable seating area and functional kitchen.
The hosts were away, but were responsive and friendly. The housekeeper allowed us to check in hours before the official time, for which we were very grateful.
If you don't mind the stairs (walk-up), and are mindful that there isn't really a master bedroom (my wife and I slept in the sleeping loft, which was comfortable and blessedly cool in the August heat), then this is a terrific home to spend time in while visiting the Marais and the rest of Paris.
Highly recommend.