Ooh! I really like this. And I really REALLY want to give 5/5 stars, but there's something off. It's so elusive that I can't even say exactly why I get a funny vibe from this pic, but it's there and it's bothering me. The word that flashes in my mind is "disjoint".
But I can't tell why. The lighting matches the background photo really well; the specularity and even radiosity seem right to me; the colors in real life wouldn't clash; all the textures seem to have the same level of attention; even the shag carpet is awesome. There's nothing that I can point to as a flaw, per se. But for some reason, different quadrants of the image feel like they are from different images, like they were rendered on separate engines or something. I don't know if you can see what I mean (or really, if it is even there). For example, the aura around the chair, ottoman and carpet just *feels* different from the aura around the marble table, and again different from that of the bookshelf and pillows on the left. ::shrug::
It's almost an "uncanny valley" effect for non-character objects: so much of it is so realistic that whatever isn't the same level of realism is all the more jarring. HTH. And btw, glad to see your newest stuff!