This apartment was awesome. We made great use of the kitchen and living room, which were perfect for our needs. We enjoyed the hustle-and-bustle outside the huge windows, but a warning to light sleepers: closed, the windows do a pretty good job cancelling the outdoor noise, but the loud buzzing mopeds at the street corner outside the bedroom can be heard until 2 or 3 in the morning with open windows.

Plenty of museums, cafes, markets, and grocery stores within walking distance. Though we were happy in this French (not very tourist-filled) part of town, our farthest walk to an attraction was 25 minutes (St Chapelle), but the metro is nearby should you prefer to walk less.
The host made it very easy for us to pick up the key and get in even though he couldn't meet us in person. We struggled with radio silence up until the week before arrival but then he responded well and had some great recommendations. Checkout was flexible albeit a bit clumsy.
Highly recommend coming here for a local feel with an active night life.
P.S. Get the museum pass if you are going to any of the major museums.