Catherina was a very friendly and welcoming host - even inviting us to a drinks party at her boyfriend's.
The location of the apartment is fantastic right in the heart of St Germain, near a number of metro stations and easy walking distance to access all of central Paris.
Our only reservation was the size. When the sofa bed is out it takes up the whole room and while perfect as a base to sleep for a few days sightseeing, it may be less convenient for a longer stay or if you intend to spend some time chilling out or cooking in the apartment.