You get pretty much what you pay for. The place isn't expensive, but it's pretty small. If you're looking for a place to crash take this apartment. It is quite far from the center of Paris but you have 2 metro stations within walkable distance.
There was a problem during the morning with the light, because the bed is positioned right next to the window and the curtains don't block the morning light. Also the street noise isn't completly blocked out.
You have a personal water heater and so we didn't have any problems with hot water even during the winter.
The toilet is similar to an airplane toilet where it's filling up with water and then sucking it all out, and so sometimes it's not so comftorable.
All in all it's a great place for a couple to spend some nights in Paris without spending too much on accomodations.