Mathieu’s place is very well located and public transportation makes it easily accessible. It is not far from the jardin du Luxembourg, the Bon Marché and the St Germain area in general. The apartment is stylishly decorated and offers plenty of light.
The only thing that I would say is that we were expecting 2 bathrooms (with 2 toilets) and there is only one. If this is not an issue for you, then the place is great.