The location is located pretty well compared with others, near by metro, RER and bus. The neighbourhood is not the safest (a lot of arabs, africans and other nations who makes you feel unsafe). The neighbourhood is dirty.
The check in very easy if you follow the instructions from Agnes (don't use google maps to get to the appartment).
The beds are very confortable, but the room is a little bit dirty and there is a lot of dust, maybe because the house is full of books. The bathroom is clean and spacious.
Consider that you can be accomodate with other guests in the appartment (but everyone with his own private room), so not always will be quiet (depends on the guests).
Agnes is very communicative and helpful.