the slope of the stairs is a bit steep, imho. and from the height of the chairs upstairs, the stair should be at least 8 steps in total (one step should not be higher than 11 or 12 inches). and then what danny said - i would say scaling the couches smaller would help so that they are 1/4 to 1/3 of the ceiling height about.

but great room so far - and nicely lit