The apartment was very nice. We had plenty of room. We were there during a heatwave (high nineties for 4 days!). The apartment did get quite warm by the second day of these temps but the air conditioned bedroom was a God send!! We slept beautifully every night. The beds were very comfortable. As heat like we experienced isn't normal for Paris, I'm sure most of the time it would be pleasant. (On the ONE cooler day we had, the apartment cooled down nicely)
The street is touristy as others have said, but we found it tolerable. My 8 year old son slept fine, never complained of noise. It is nice to have so many food options right on your doorstep! We found the building safe and secure and close to lots of things. We found it easier to walk to hotel de ville metro instead of using the metro at the end of the street. Less transferring.
The kitchen was great! I made several meals there. There is a good grocery store a couple of blocks away. It was great to have a dishwasher and a clothes washer. The elevator was tiny as is the norm in Europe, but a blessing when moving the luggage (and when we were exhausted!) As others mentioned the staircase in the apartment is a bit narrow and steep, but for us it was fine.
Only complaint was the cleaning instructions. I had asked Jean Francois about this prior to our trip and he said "just a light cleaning" was necessary. However the instruction manual seems to require more. We weren't sure, so we just did the best we could.
All in all it was a great stay,