I was really impressed by the Studio of Julienn and his wife! They refurbished it with an excellent taste and the details they put in are really remarkable. It is definitely a warm and cosy place with a rooftop view: simply amazing. The check-in and check-out procedures were really easy and quick. I definitely suggest this place for the St Germain area, which is unique to me.
I will come back for sure there, when in Paris!