Thanks for sharing this! The lounge is very easy to find based on directions listed above or printed behind invite card.
It is a vast improvement to the other Miracle lounges. I was meeting a friend at the business side. The business lounge food isn't as good. Food offerings were lousier and no sushi (head to JL for that!) the bamboo garden also lacks a drink cart...
After my colleague left I headed to the CX lounge as it was closer to my gate. For those who drink note that CX lounge BKK doesn't offer champagne anymore but the sparkling Chandon brut and rose is still very nice.
But the new Miracle lounge concourse D is indeed an upgrade!