The apartment is great for 3 parties. One room has an ensuite bathroom including toilet, the other to bedrooms share a bathroom including toilet. There is also another additional single toilet. Overall it was exactly what we were looking for to attend a trade fair.
The place is pretty close to metro station Maison Blanche of line 7 that brings you throughout the city e.g. to Sorbonne University or Chatelet that connects you to RER B to the airport.
Check-in and -out were easy, Miren was always reachable via SMS.
I can highly recommend this place and would stay there again.