Pauline is a very lovely woman, that is always ready to help incase you need any help from her.
Her apartment is in quite calm area of Paris, close to the canal (though right now there are some renovations happening in the buildings near by, so its more noisy than usual, but otherwise its really peaceful ). There are 3 different metro lines nearby, though i personally used only 2 of them, as the 3rd one doesn't go to the center. There are a bunch of different supermarkets in the area, fruit&veggie shops, pharmacy, bakeries and anything else you might need.
Apartment is on the 5th floor (no elevator), but her son helped me with the heavy luggage that i had, so i didn't have to drag it up the stairs myself and it was a nice workout for my legs every time i got back home (my legs really got stronger!) . :))
Apartment has all the amenities one might need and everything is working perfectly.
I loved having my own space (loft style room with a living area downstairs and a bedroom and a bathroom upstairs).
2 things to mind, Pauline is a smoker and she smokes inside the house, but i had my room doors closed and the smell didn't come in, so it was ok for me. Another thing, there is a very old cat in the apartment that likes to meow :D he doesn't do that all the time and most of the day he is quite quiet, but there are certain times when meows, so just know. :)
To sum this up, i really enjoyed staying in Pauline's place, as i liked the place itself and i enjoyed feeling welcome, so i will definitely stay there again next time i'm in Paris. :)