The location was great, hands down, and the apartment is tastefully decorated. A Franprix across the small street, within a stone's throw and a lovely bakery, plus restaurants and bars. The stairs up to the apartment, mentioned by others, are a nightmare. and not an exaggeration. These seriously need to be fixed; it was really hard to get our suitcases up the stairs, some of the stones/bricks actually moved when you stepped on them, and at the top, where the apartment is, it is very narrow threshold. I realize the building is old and charming, but this needs to be safer.
My only other negative comment is that you should be prepared to be awakened nearly every morning at around 6 am by very loud city garbage trucks that are servicing businesses. This goes on for about 30 minutes, just below the apartment. Unless you are deaf, you will not sleep through this and it is very, very loud.
That said, Valerie was awesome - we even had a problem at the end where we couldn't leave get the lock open for the little storage box to leave the keys in, and had to hide them and let her know later because we had to catch a train. She could have been very upset about this but was not, and it was our fault for not finding the code that she left for us.