In March, I was traveling on Qatar Airways in coach with OneWorld Emerald status. When I flew through Doha, I visited the two-story Al Mourjan lounge with the huge pond inside it.

The app indicates that there are two Al Mourjan lounges. One in the "Main Terminal / A" and one at "HIA / Level 3, Concourse D." Which one is the large one with the pond inside that I visited in March?

Which one is nicer? It looks like they both have showers and quiet relaxation areas? Do they both accept paid entry from non-elite coach passengers on Qatar airways?