I have used 1903 lounge and also found it ok. My worry is the amount of passangers that may be using it at any one time. This lounge is already used by Qatar (alongside a couple of others) and Etihad are to use it when they move over the week before Emirates. It can also be booked by any traveller but interestingly there seems to be some times on a day when it cannot be booked, suggesting maybe they are expecting it to be very busy, unsurprisingly around the time when the three middle east carriers would be using it.