We stayed at this place for 6 nights in May 2014 and it was everything that was expected from the photos and description. Phillippe and Isabelle were very accommodating, allowing us early check in and late check out. They were very lovely and brought us breakfast each morning. We also had dinner with their family one night which we thoroughly enjoyed - we thought that this was very unique experience.
The room was as described - compact, yet just enough for what we required. The location was an easy walk to the Notre Dame and the centre of Paris, Jussieu station was also conveniently located. The restaurants and take-away stores on the street were also inexpensive compared to other areas, we also had a cheap convenience store across the road which was really good. Wifi access from inside the room was excellent. There were maps and information available from within the room which was really helpful. The floors were a bit creaky, however, so were the Palace floors in Versaille and in Napoleans extravagent living quarters in the Louvre.... I think this is just a French floors 'thing' that can't be helped. Someone else commented that the bed is a futon bed - however I didn't think so, and I found it to be very comfortable.
It was really a home away from home, and if you ever wanted to feel what its like to be a Parisien for a week, this would be a place to stay.