Actually, almost everything changes slightly - the number, shape and pattern of the chairs, the number and pattern of the pillows, the pattern of the curtains, the scene outside the window, the wooden part of the table, the pattern of the carpet... The blue couch stays largely the same, it just loses some detail...
Yes, first a still life and something impressionist, then a blob and a blob, then a smear and a smear. And what about the reflections and transparency of the glass table top? It gets very indistinct. Keep working at the same image and it looks like you'll end up with some Deep Dream weirdness.
I think the fireplace might be turning into some tiny stairs leading down. :)