Sput,
I was talking to Mom about where to put the chamber and she said there's no room in the storage area
and she'd like to have some sun in the bedroom
. So we'll have to do a re-think so that all the mechanicals are remote or quiet. Also the facia will need to be decorative and have a set of transparent and opaque doors. I measured the recess and its 1.10m deep X 1.14m wide X 2.22m high (2.36m if we remove the dropped ceiling).
Here's my latest thoughts, we'll still need to work on the lower in-vents, false floor, and the glass partitions. I was thinking bi-fold wooden doors.