The apartment is very charming and true to the pictures, making very good use of the space. The loft bed was very spacious and comfortable (used by my father) and I slept on the lower bed which I found to be very comfortable as well. Everything you need for a short stay is available and conveniently accessible.
There is a really nice view from the top of the park near the apartment, the nearby bakery is lovely, and even though it is close to some very busy streets it is very quiet in the apartment and allows for a good night's sleep.
As far as hosts go, Charlotte's father (Jean-Luc) is fantastic - very kind, accommodating and accessible. If you encounter any issues he willingly helps find a solution. He treated us really well and helped us out. It was a very nice stay in Paris.