I've just spent 3 days in Paris at Nicole's bedroom.
It was absolutely perfect! The room is tiny but cozy, warm and perfectly clean, perfect for a couple.
Nicole is a great host, precise and very helpfull.
The neighbourhood is safe, quite and the Wagram metro station is exactly in front of the building.
If you arrive at Port Maillot by bus from the airport (I arrived in Paris Bouvais), I suggest you to take a taxi to go to Nicole's. It's quite close and it will cost you less then 10 euro...
I definitley recommend it!!!