my partner and I spent seven nights at Marion's apartment and it was a great stay. you can't beat the location; you can stick around and explore on foot everything that Marais has to offer or you can walk a block and hop an easy bus or metro ride elsewhere.
the apartment was nice. the bed and pillows were as comfortable as they come and there was lots of bedding available. kitchen was equipped ok for our purposes, that said we ate out all the time. my only minor complaint was the couches (lol sofas). while quaint and stylish they were old and not comfortable to sit on at the end of the day. and when your feet are sore from walking all day, putting them up would be a nice option. but this is a very very minor complaint and it's also quite obvious from the airbnb photos.