The pros: check-in was super smooth, hosts communicated promptly, and the studio was relatively modern and adequately decorated.
Otherwise, I'm not sure what other places are like in Paris for this price range, but this one stunk; I'm really surprised by the great reviews.
CONS: (1) The bed was UNBEARABLY uncomforable: rock hard, lumpy/uneven, rough sheets and flacid pillows. We could barely sleep. (2) The sink and shower barely drain so the apartment was dank (not the slang meaning) and smelled like a moldy basement. (3) Belleville is not a nice neighborhood, the nearby park is trashy and gross, and the building itself is basically the projects. (4) It's so incredibly noisy it would almost be comical if it weren't so soul-crushing; huge parties in adjacent buildings till 4am, rowdy teens and various street noise, shouting neighbors through paper thin walls, and a heavy swinging gate in the hallway that bangs constantly. (5) $175 per night?? (6) The pictures make it look much nicer and larger than it is.
All in all, the listing isn't terribly deceptive, we survived the ordeal with a safe enough spot to crash, and the owners seems like they would be nice folks, but we would never stay here again for any amount of money. Sorry. Look elsewhere no matter the cost.