Quentin's apartment is a perfect place to stay in Paris. The location is perfect, near to Fontaine Saint-Michel, you can get easily everywhere on Paris from there. Main locations walkable and stations Odeón and St Michel are just in front. There are lots of cafés, restaurants and fun places in the area.
Quentin was a very good host and I felt very comfortable in his place. I got from him nice advice on where to go and what to avoid in Paris.
The building is very safe and the neighbors seem to be ok with airbnb.
I totally recommend Quentin's place in Paris.