We were 3 adults and one child and found Lucas' place perfect for our needs. It is close to Glaciere metro and very convenient for several good bus routes.
We loved being in a neighbourhood that wasn't touristy but still just a short walk from wonderful places like the Jardins de Luxembourg and the Rue Moufftard. There are bakeries and supermarkets close by as well as great local restaurants.
It has a great little kitchen, a fantastic shower, plenty of hanging space is warm and cosy despite being a basement flat.
There is a slight musty, damp smell but as the courtyard is secure it is safe to keep the windows open which helps to keep it fresh.
Lucas is a great host and very informative and accomodating. We would definitely stay here again if we came back to Paris.