It was very enjoyable staying at Berenice's house, she is a nice lady and always taking good care of me, preparing the food and show me to the museums, it was wonderful and I enjoy chatting with her.
The flat is super close to Galeries la Fayette, just as mentioned, it'll be the wonderful place for single female traveler. You can always buy something and put it back home without worry anything.
I think the space is good enough for me and the bathroom is clean and big enough, I'll definitely stay here again for future trip.