Ekovalsky,
Very nice looking listening room! I am going to have to show my wife pictures of your room, as I am building a new room and trying to incorporate as much "acoustical treatment" is possible, but I need ideas like yours to disguise them!
FYI - and for what it's worth, I have heard both the Rowland 201, and 501's along with the H20 monoblocks, and they are not close in their sonic performances. Just thought you may care to know.
LoL - I may be contacting you down the road for info on the draperies.