I stayed for one month in the apartment, and I had a great time there and can highly recommend it. The location is wunderful (the Rue des Martyrs neaby is nice, with great bakeries, shops for fruits and vegetables and wine shops) and one feels very safe there. The house has a friendly housekeeper and a nice courtyard, and the apartment is newly renovated and in a great shape!
Since I often prepared food in the apartment, I found that the kitchen had all I needed, and the bathroom is spacious and comfortable (including a rain-shower).
I also have to praise Mtp for the great service they offered to me, they very very responsive and helpful - thank you very much! ;)