I flew this airline since it was a partner with American Airlines and I was using points. This was not a very comfortable overnight flight for me. The seat was not comfortable in the reclined (lay flat?) position for me (I am 6' 230lbs) and it seemed to be designed for a much smaller person.
The service staff was also not attentive and spent most of the time in the service area with the curtains closed.
This was the best flight option for Amman but I would opt to go through London or a European city in the future and connect with a more comfortable airline.
On the positive side Amman was a very great visit.