Haruhi Bedroom: definitely needs change, it's too austere for her.
Haruhi Kitchen: Meh. Could be better, it's not bad. It lacks flair, feels very empty.
Kyon Kitchen: No-nonsense, well organized kitchen. He'd like it. Akane'd like it more.
Kyon Living Room: Surprisingly similar, maybe i'll recolor some things? I suppose Akane likes to move furniture around... and in other rooms, too. It's a bit more square than the anime one.
Mikuru's one-room Apartment: It's adorable. Marry me, cute historian.
Tsuruya futon: Kind of spartan. I expected something more ornate, but then again this fits to a tee.
EDIT: From IRC, files are found in the archive up in the OP:
[10:44] <Agasa> For haruhi's room i suggest either bg141.jpg
[10:44] <Agasa> or, better: BG_19D0.jpg
[10:45] <Agasa> Air_Standard_Edition_0031.jpg
[10:45] <Agasa> or even 0571.jpg - thought this could go well for nonoko as well
For Haruhi's kitchen: 0563.jpg ?