We stayed with a family of 5 for 8 days and overall enjoyed our stay. I would sum up the apartment as follows:
Positives:
-great central location only a 2 min walk from Notre Dame, 5 mins walk from musee du national moyen age (Musee du Cluny), Sorbonne, 10 min walk from Les Alle and very close to the metro
- lots of tourist restaurants on your doorstep as this street is effectively a small pedestrian street with the ground floor tenants primarily comprising creperies (the one next door is very good and cheap), Italian, French, Greek, kebap restaurants all within 20 metres.
Negatives:
-On the weekend the street gets very noisy with an Irish pub on the ground floor of the building and several nightclubs very close by.
The apartment is small, it has two toilets one on the entry level and one on the next floor up, however if you are larger than a child you will struggle to use the entry level loo and keep the door closed.
-The staircase going to the upstairs bedroom is extremely narrow so getting large suitcases up to that bedroom is a struggle