Positive aspects: Good room, yet basic. Great location, close to UN and to public transport. Lots of privacy. Great to have a balcony in the room and access to a free portable wifi, that is a BIG plus for Geneva. Good quality-price ratio.
To have in mind: This is a family apartment with a small kid. The single bed was way too narrow, even for a petite person like me. If you don't speak French, you won't be able to communicate with the host, nor with the person who is there to communicate with guests AT ALL. If you have a long Airbnb experience that is not an issue, but if you don't, you are up to figure out the functioning of the apartment and general house rules by yourself.