Cedric's place is really great. It's on a quieter side street and is nested towards the back of the courtyard, so there's very little street noise and the neighbors are all mostly families and quiet. There's a great market open late every day one block away, as is the metro. And Marais is right there for some easy walking and tons of dining options. It's not a bad walk to the Louvre or Notre Dame or the Latin Quarter for that matter, and the Eiffel tower is doable if you want an hour's walk.
The kitchen has a few pots and pans - nothing too fancy but you can cook a simple meal if you want. Cedric provides instructions for the induction stove, which was helpful.
The main bed was a full size or near to it. I found it more comfortable on a diagonal, but that may not be an option with two people. The couch has a pullout bed which is probably at least as if not more spacious, though I never tried it, so ask if you need to confirm that.
There were plenty of towels available. Cedric has a cleaner who came by on our second day and dropped off a giant bag of towels on top of what was there already. The shower was a hand shower with a seat built into the tub, not a standing shower, but it did the trick. There's a separate, tiny water closet off the living room.
It's worth noting that there is a dish washer and a clothes washing machine in the kitchen. There's no clothes dryer, though. Cedric had a large clothes drying rack which could handle a full load of wash tucked behind some curtains available.
I was there for a month and could have happily stayed longer. It was a very good base of operations.