Very comfy and cool space. Actually bigger than I expected. The living/ dining area was sooooo nice to have a little breathing room considering every other place we stayed in Europe were tiny studios.
The location is excellent. Just a block or so from the metro station. There are two or three little grocery stores next door which was very nice because we had breakfast and snacks in room to save on cost. (plus you need an afternoon snack as many restaurants don't open for dinner until 6 or 7).
I would recommend venturing in the opposite direction of the main train station (gare de I'Est). Our walk from that station to the apartment was a little sketchy.
Overall definitely recommend this place. It was comfortable and welcoming after a busy day in this busy city.