Closest thing would be Air Asia X - Quiet Zone? :) Pretty sure they only allow guests aged 10 and over in rows 7-14. 

I fly home to Scandinavia 1-2 a year, credit to Velocity (maintained Gold for awhile now) and fly SQ or EY. Find that Economy Flexi Saver(W) on SQ gives best status credit return per $ spend and makes Gold acheivable on 2 return Economy flights per year. Note you still have to fly 4xVirgin metal ...

We do similar stop over arriving early morning from MEL departing to BRU late night, we just stay at airport hotel as they offer 6am-6pm rate, then off to lounge until departure. MissChipChip prefers the rest stop :) Airport Hotel doesn't have online booking so just email for rates and availabili...