I enjoyed my stay, probably don't have anything much new to add than other reviews. It's a nicely appointed apartment, very close to 2 metro train stops (Republique and Temple) and the location in Le Marais is great. It is a little small like others have said, but comfortable and that's probably common in Paris. Adequate room for me, a solo traveller. There wasn't enough counter space for toiletries in the bathroom, had to use the linen shelf above the toilet. But it's very nice. Warm. Shower was nice.
Bed and couch are very comfortable. Note if you use the washing machine on delicate cycle, you need to add another separate 16 minute spin cycle (there's an option on the dial for it) at the end to get rid of some remaining water. Couldn't find a manual so I had to Google it. Also note that some shops around there are closed on Sundays. Le Petit Parisien around the corner had delicious sandwiches. Very good communication with Celia and Yohan. Thank you.