We stayed in an absolutely wonderful apartment for 4 (2 couples) 3 years ago. So, we were very hopeful, but also nervous because this studio seemed just too fabulous to be true. Well, it was everything that it said it was. Unbelievable. Yes, it is a studio with a murphy bed so it is small. But it is perfectly designed. A small, but great bathroom with a really nice shower. The kitchen is perfectly designed so that you have everything you need in a quite tiny space. And, there is a washing machine /dryer. Its small and you need to be careful with it, but it is completely functional and that makes this apartment really worthwhile if you will be staying any length of time---we stayed 2 weeks.
The owners (Marie Christine and Marc) are as wonderful as you could hope for. They were there when we arrived and showed us everything that we needed to know. When the phone failed they arrived the next morning with a replacement. Because we stayed 2 weeks they brought fresh linens after 1 week (although we easily could have washed what had been provided). Check out was a breeze and they had arranged a taxi to Orly for us.
I hate to give them this wonderful rating because I don't want anything to get in our way when we come back in the fall of 2015. Oh, and by the way, the view of the Seine out the windows is absolutely fabulous and probably increases the value of this apartment by about a million euros. My wife has refused to stay any where else. Does that tell you anything.