This looks really nice so far, but I think the floor definitely needs some more details to break it up. I'd add a welcome mat in front of the door and maybe put rugs in front of the furniture or give the desk area a different type of flooring like wooden boards or tiles.
(Also, it looks like you've got a stray darker pixel on one of your floor tiles towards the bottom.)
Very good work on the walls and furniture! I would reccomend adding some small touches of depth or wear on the floor. Right now it looks like of like the floor is plastic.
I dig your furniture, but the floor really needs a lot more visual interest. I recommend a few different floor tiles for variety, maybe wood and carpet or something?
Not sure what the grid-ish noise near the bottom of the wall tiles are supposed to be, but it's pretty good otherwise!
very nice and clean, really like the shadows