Im new to pixel art as well, and I think this looks fine... but I have 2 questions.. Why is it bad to have a complex floor, doesn't that prove that you are skilled? and what do you mean that the "door knobs don't read well" ?

Try combining similar colors to cut down on them. For example, some of the colors on the door could be eliminated by using the dark colors of the wood.

Door knobs don't read well.  Floor is overly complicated, 

 Pretty nice for a first pixel art...I can tell from this that you seem to have previous artistic experience, I can tell from this you're gonna be a good pixel artist. Try working on your color management a bit more, though. 60 colors seems like a lot, especially when I can see a majority of them are being wasted in an area as small as the painting.