Unfortunately we didn't have a great experience, mainly because the host was out of the country and didn't pick up his phone. We couldn't connect to the internet and we weren't given any other contact options during our stay to help us. The place is tight for 6 people (as advertised), but you can get past that and accept that you are in Paris. And the space usage in the apartment is smart. (The loft upstairs, is crawlable, be forewarned) It has a kitchen area, coffee pot, etc...so you're good with that too.
To start in, no one was there at the time agreed, which is/was unfortunate, but not a dealkiller. The apartment was not ready (still had to be cleaned) and after waiting on the cleaning lady to arrive, we had to drop off our stuff and head out for 1-2 hours while she got it ready. With a whole family after driving 6+ hours, this is NOT the ideal situation! It was very frustrating because all we wanted to do with sit down, relax for a bit, unpack, and then head out.
At this point I will nitpick, but mainly to ensure that future guests can enjoy the place with a bit of improvement. It didn't keep us from taking a shower, but there is mold in the shower, noticeably a lot. It could be cleaned up with some bleach or mildew remover. The drain overflows within 3 minutes, no joke. Water all over the floor. And lastly, you might want (have) to bring your own toilet paper.
Although we prefer to stay in a hotel next time because service (to me), is essential, this is still likely a good deal for people who don't need a lot of space, and are easy going. It's a great location, and it has all the basics.
I just encourage the owner to come by and check up on it in person, as it seems he probably hasn't in a while and for us, that made the stay less enjoyable.