The good: The staff was super friendly and helpful, the dormitory rooms are decently comfortable and provide all you need (light, usb charging, storage cabinet), the lunch/dinner options are decent (enjoyed the Salade Lyonnaise), and the location is not bad at all, specially considering you can just walk a couple minutes down to the "mairie du 1er" to take the C13 bus that's direct to the Part Dieu train station from where you can easily go to the airport with the shuttle tramway.
The average: Don't pay for the breakfast and use the shared kitchen instead. The choice is very limited and (to my taste at least) not particularly good. I ended up just drinking apple juice, some mandarines and a slice of bread because the "quiche" was compact as a brick, the croissants were so soggy you could make knots with them.
The bad: In the first night one of the guests (with apparently Tourette syndrom) spent many hours talking out loud making it completely impossible to sleep, that was solved by asking to move to another dormitory for the next night.