This is a cool piece! Since you asked for criticism, I'll make a few suggestions. As always, take my opinions with a grain of salt.
- At first, I didn't understand the windows. I thought we were looking at big cubes in a white room, like the Matrix. Maybe the windows could have more thickness and three-dimensionality to read as windows.
- I would really try to avoid single lines with really sharp contrast when you're trying to show light and shade. In general, this piece would probably benefit from larger clusters, maybe some AA in cases where the contrast is very sharp and a bit less dithering.
- The highlights on the wardrobe / cupboard on the left are especiialy sharp and I don't think they do much to show light and shape.
Other than that, I really like the scene. I like the way you pixelled the chair, the incense and the phone. :)
Thank you very much for the valuable suggestions! I'll practice more with them in mind :)