Looks like you've got a few different colour ranges going on there. What was the end result?

Ohhh, the black sink...they show everything,hope yours does not...but I like the black handles

The rest of the room looks more period and this wardrobe is very modern...... You could take off one of the robe doors and get a dividing upright panel put in and build in some drawers and open shelving for toys etc. on the front doors you could attach a moulding similar to that on the ceiling and with the correct type of paint you could paint the wardrobe to match the wall colour. I would probably change the door hardware to black to match in with the bedroom door. You could also get some funky wallpaper and paper the back panel behind the open shelves. That way you can change the look quite easily as your son grows quite easily.

I would definitely keep your taps and sink, but replace/go over the top of the bench top! It would be nice to price replacing that shower door - change to a frameless or semi frameless piece of glass. Change out all towel rails and such wall fixtures - you can get good chrome looking budget ones at Bunnings that will last three years. Personally, I would definitely paint the vanity doors white gloss - a 2-pak look. You might find the only available options for going over your current floor (other than tiles), are pretty ugly and I wouldn't trust tile paint on the floor it has been known to wear badly. If you don't mind a very small step up into the bathroom, you can tile straight over the top of those tiles, Go to a tile outlet place and you will get very nice tiles in the small quantity you need for less than $100, and the tiling job shouldn't take long or cost much. I have done exactly that myself and I would look into that if you really hate the floor tiles. If the wall tiles are cream and not white, I would paint them with white tile paint. If you do change the floor at all, I would get tile paint in a similar tone - say a stone or grey colour or something similar to the floor colour you go with and use that tile paint to paint carefully over the dark brown stripes in those wall tiles - or better still - try white tile paint over them first and see how they look. I would definitely be painting all that mission brown trim and the inside of the door white if it were me as it will modernise and freshen the space right up, but if you really want to stick to a timber stain, then yes, I would go much lighter than it currently is. Definitely paint the vanity doors in my opinion though if you want to update the whole look in there. Would be best to get rid of that piece of timber between the shower and the door too! That's just me though! Best of luck with it!