Me and my friends (6 people in total) stayed in Christine's flat for 4 nights.. it has been a wonderful experience! Flat is very charming and comfortable, we felt like being home! The flat is extremely well located, next to Centre Pompidou, in a really nice quartier of Paris. You can join the main important monuments and museum of the city by foot.
Last but not least, Christine is a really great host: in particular we appreciated her avalaibility, both by phone and e-mail, for everything we ned during our staying; moreover, she has been extremely flexible with chech-in and out time (we arrived and leftvery early in the morning), tryed to make our stay the most possibile confortable...and she did it!
For next time i'll be in Paris i will take in my mind Christine's flat for sure :)