Great location just behind St. Michel Fountain, easy access from the street, but it shall be noted that it is on the 4th floor, no elevator and about 80 steps to go. The building is an old typical one, so the acoustic isolation is not the best one, but personally I had no problem. I stayed 4 nights and the neighbours I met in the stairs and corridor looked nice and gentle.
I have not met Mrs Maria personally, but the handshake was made perfectly by her daughter.
The kitchen is equipped with the necessary but considering all restaurants in the neighbourhood I did not cook. The shower is working well and the heating as well.
I would recommend for a short/medium stay to a single or a couple.