Our experience at Sixtine's place was absolutely fantastic! We were visiting Pitchfork Festival Paris and her place is just a couple of minutes from the venue. Location is perfect, the apartment is spacious, has a living room with netflix, a kitchen and everything else you need. Three adults easily fit if one of them sleeps on the couch.
The apartment is pretty artsy and posters of films by Miyazaki and Kurosawa speak to the inhabitants' excellent taste in art. That is in addition to some of Sixtine's own artworks up on the walls, which are beautiful to look at!
Sixtine was super nice and responsive throughout our stay - she reacted to every request quickly and helped us with any questions.
All in all it's a total recommendation - would stay there again in the blink of an eye :-)