As a lounge I really like the Al Mourjan. I use the wheelchair service in airports and my real complaint about the lounge is the seating. With reduced mobility it is impossible for me to get out of those stupid blue chairs or the basket type seating in the central area. They may look good but they are not practical.
When in the AM I always ask the wheelchair assistant to take me to the sandwich area where I can almost always get a seat in the blue armchairs immediately on entering the area. If they are taken then the leather armchairs just outside the sandwich area are a perfectly good alternative