The location of the apartment is very central - walkable from Le Halles forum and minutes walk from Sentier station. Although the apartment is facing the street, there is still peace and quiet as the street is only for pedestrians. There's a lot of history in the area with small restaurants, cafes and grocery stores.
El is a very responsive and wonderful host. Everything was tidy and clean and instructions were clear. She also gave nice recommendations on restaurants and cafes to try.
I would definitely book El's apartment again given the chance to visit Paris!