Pierre was very responsive and helpful! He's a really sweet and gracious host who left us OJ and water in the fridge (unexpected and totally appreciated). He, even, arranged an early check-in for us and had a map with a list of nearby restaurants and personal recommendations. We enjoyed staying at his place in Le Marais. The apartment on the top floor is very clean, convenient, and charming! You can use the small lift/elevator to go up and down.
PROS: 3-4 minute walk to the nearest metro station Chemin Vert, and a 7 minute walk to Bastille metro station. There are lots of bars, restaurants (open til late), markets, and shops to walk to. The windows face into a private courtyard and stays very quiet. Bed is comfortable. Private bathroom. Great to use washer for laundry.
Keep in mind: If you have heavy foot steps, there are creaky floorboards. Look for switches on the wall to turn on the lights to the hallway. The key can be a bit hard to turn the first couple times. There's no AC but we kept fairly cool with the windows open in 90 degree weather.