Perfect for a city break and well-located but very small; stay alone or with a second person you are very very comfortable with! You could cook but there's not much space to do so.
There are also glass doors opening onto a courtyard shared with other apartments right in front of the shower -- there's a curtain, but be aware if you are sensitive to that kind of thing.
Bed was perfectly comfy though and the fan was much appreciated in August.
Location is really good, shops and restaurants very close by (we liked the host's recommendations) and the metro is also only a few minutes away. Or you can walk to the Louvre/Seine in about 15.
If you're looking for somewhere conveniently located to sleep in Paris, i can definitely recommend.