Nicely located, very small and basic place, good for people who need cheap accommodation, can do without luxury, and don't have sensitive backs.
The flat is perfectly located for travelers looking to experience bars & nightlife along canal St Martin or the alternative culture of Belleville and surroundings. In Parisian style, the apartment is very small, the bed essentially filling the entire room when unfolded. Furnishings are basic (e.g. lacking a holder for the shower head) and walls undecorated. The fold-out sofa bed is pretty old and bad news for people with even slightly sensitive backs. The window looks out onto a beautiful street tree. Ilya was a very nice and attentive host who immediately helped out with all our questions.
If it wasn't Paris, the flat would not be worth the money asked per night, but for us the great location was an important plus that made the whole package feel alright.