Isabelle was a great host! Being especific...
Pros:
1 - good location (with metro you do anything in Paris)
2 - clean, functional and pretty studio
3 - everything you need to stay confort in a small but cozy place
4 - cheap price
Cons
1 - WiFi was too much slow (Isabelle tried to solve, but there were not enough time)
2 - the toilet is outside the studio, but is in the door in front of it and private
Score: 9/10