All the charm of the Marais - superb location, beautiful wood floors, and large light windows. You're renting this apartment for the location and the unbelievable amount of shops and restaurants right outside the door.
Sleeping - cozy beds, with clean linens and down comforters. Stairs to the back bedroom are a wee treacherous, FYI for any older guests.
Noise - VERY loud neighborhood. We are easy going so just popped in earphones and slept fine. But literally, talking/yelling people all night long. Loud sirens, bustling noises. It's a lot of a noise, it sounds like people are in the apartment talking. We were personally fine with it (but I'm from New York).
Kitchen - Well stocked with all you need. We made a great dinner at home one night.
Bathroom - The shower is a true disaster (tiny and poorly designed), I just decided to give myself a sink shower instead. Plenty of hot water and good water pressure. The bathroom's got a nice big mirror so multiple people can get ready at once. And the toilet has its own room, which is nice with multiple guests.
Other notes: 3rd floor walk-up, but small easy steps. Two couches but neither are super comfy, apt works best as a home base and not for long hours of lounging about. Great restaurants, shops, Franprix, are right downstairs. You're paying for this location and ease of getting what you need.