A genuinely unique and totally charming place. This isn't an old apartment some foufy decorator/consultant has redone to simulate old timey Paris, this is just an old bourgeois apartment that hasn't been touched at all in like 80 years. Rather than redecorated, it's been taken over by the charming, slightly hippie musician grandson of the no-longer-with-us formidable bourgeois grandmother character who visibly lived here for many many decades. The result is a crazy Old Paris-Charming Hippie mashup where everything creaks, the wall is peeling off the walls, and the entire thing is absolutely superbly fun.
Oh and the location is to die for, obviously, but you can tell that just by looking at a map.