Nathalie"s flat is very spacious and beautiful.
The house keeper was waiting for us at arrival and there was a nice bottle of wine waiting for us in the kitchen.
The apartment is well equipped and very comfortable.
The washer and dryer work well and came in very handy.
The AC works fairly well but you need to pay attention to the instructions for restarting the system if it acts up.
It is a bit of a walk up to the 5th floor, but this just helps you walk off all the great food.
One minor setback is having only one card key to access the Building. You have to plan who will return first if your group goes separate ways. Nathalie did get us a 2nd key for the flat and you can always buzz other residents to see if they will let you in the building. If that doesn't work there are several cafes close by where you can wait.
The street is a busy one but the windows provide excellent sound control.
There is a metro stop close by and plenty of buses.
Lots of great shops and several supermarkets close by.
I highly recommend Nathalie's flat in Paris.