The apartment that I stayed in looks like what is pictured on the web site. I would describe it more like a medium-sized hotel room with a small kitchen and desk area installed against one of the walls. If you're staying with a small family then you'll probably get an apartment with a different layout, i.e. one that has a separate sitting area with sofa bed.
The apartment building location is only about a 20 minutes walk to the Eiffel Tower. There are a couple of markets and bakeries conveniently located nearby. It's an easy walk to the Emile Zola metro, and Rue Due Commerce just 5 minutes away has a lot of stores too.
If you have heavy luggages then the stairs might be a bit of a struggle - I was glad that my apartment is only on the second floor. If the apartment faces the street like mine did, then it also faces a school yard across the street; The noise can be loud when the children are outside playing, but this wasn't much of an issue for me since I was not around much during the day.
Overall I give my experience a 4 stars out of 5 rating. I took off one star, because my apartment was not ready when I arrived after 3pm for the check-in. But after that initial hiccup, it was smooth sailing. I really liked the apartment - it was bright and clean; the location was super convenient and a perfect fit for what I needed. I would stay here again if I find myself back in Paris and want to stay in the same area of the city.