The flat is exactly the same like the pictures. It's also brand new and spot clean. The communication with hosts is smooth and they are really attentive and friendly. eager to give advices as well, but I'm quite prepared myself so I didn't ask much. They also prepare quite a lot of tea and coffee for free and one bottle of wine as a welcoming gift.
The flat is well-located, just 4' walk from 2 metro stations, nearby many off-license convenient shops and one big supermarket which I think have finished by now. It's near China town I guess, cause I saw quite a lot of Asian restaurants not far from the flat.
Sofa bed is also good! Sleep sound.
I saw prostitutes, but the neighborhood is ok and safe . If you use Colonel Fabien station you never see them, but Belleville is more crowded at night if u go home late.
A little bit noisy from upstair apartment in the morning around 7h30-8h, and at weekend nights outside. But it just affected me a little bit, still sleep well.
Overall, its a nice stay and beautiful flat setting with that price in Paris.