This is a lovely little apartment with a real Parisian feel, in a fantastic location. Valentine was great with communication, leaving us detailed instructions on getting in, which were easily followed.
A couple of points for anyone else thinking of staying here - as mentioned, the apartment is on the 5th floor. There's no elevator, so if you're of limited mobility you might find the stairs hard work! We also found no obvious place to store our clothes during our stay. Not a big problem, we just used our suitcase, but if you were staying for longer, you might want to be aware.
As I said above, the location is great, just a few minutes walk from St Germain metro station. There's lots of places to eat or drink nearby, and the cheap food around St Michel is not far to the east. Walk down and over the river and the Louvre is a few minutes walk also.
The apartment is located at the back of a couple of courtyards, so set back from the street- this means although in a central location, it's really quiet.