I think you were a bit unlucky.
I suspect that one's experience of the Miracle lounge may depend on what time one is there. I've been there early-mid-morning a couple of times recently, and while it has been busy, I've always been able to find a space to sit; I've found the food offering pretty good; and, at that time of day, it was looking pretty clean and tidy with no smell of smoke in the toilets.
Sure, if the Sakura Lounge is open, it's a better option, but most of the time it's not!