I stayed on Sonia's lovely flat in Paris with two friends for a week during October 2012. We had a great time there. It was very pleasant, and well equipped.
The neighborliness itself is not much of a nightlife experience, but the apartment is very close to a main Metro station so it was really easy to get around.
We had a fantastic time in Paris and will defiantly recommend Sonia's place. Do consider that it is a bit difficult to get suitcases up and down the six floor building.