We had a very good time in Paris and the apartment. It's spacious and feels cozy.
The balcony is a nice extra and if the windows are closed the apartment is really quiet despite the lively and loud neighborhood. The only real downside was the staircase:
It's super narrow and steep. If you have big suitcases with you it will be quite an adventure. At check-in we got a lot of help from our host luckily (thank you again). I just feel it needs to be pointed out because some people would maybe choose a different accommodation because of the staircase.
Otherwise than that, good apartment.