I think it is called Ma Wan Consumer store but it could be slightly different - anyway it is one of those stores that sells everything a bit like Japan Home Store. I have a double and a single but I did buy mine about 18 months ago now so can't guarantee that they still have them.
The beds are good - I slept on it for a week when my parents visited and I gave them my bed and because it plugs in I would just turn it on for about 30 seconds every night to make sure it was well pumped up.
MacDonnell Road is the road off Cotton Tree Drive that joins Magazine Gap, its in mid-levels at the eastern end of Caine Road, just a few minutes back from where Bowen Road begins.
Go to
www.ypmap.com and put in Coda Plaza and you will get a map.