With a small budget, I would first look into getting the tiles professionally cleaned.

Buy a new vanity.

Look into replacing the shower door.

I love SW Sea Salt. We did a mini renovation in our Florida guest bath.

Get nicer rugs.

Down the road, look into a Roman shade for the window..

Agree with the above. I'd also consider:

- A shower curtain with pretty color, pattern and texture. Add colorful mats. Downsize from the large mat currently in front of your shower; when it takes up the whole space, it looks cramped.

- I don't see any place to hang towels. Looks like above the toilet is the only option? This might knock out the plant on your toilet tank, which is too bad because every room looks better with some greenery. Perhaps you could hang a plant kinda between the toilet and the vanity?

- If you replace the vanity, definitely choose something with drawer storage.

- A paint job is in order -- looks like something messy around the shower-ceiling? While you're doing this, crown molding would really elevate the room.

- That square light over the shower is doing nothing for the room.

- Yes to replacing the current window blinds. If privacy is an issue (and the blinds suggest that it is), maybe cover the window with a film that'd obscure the view while allowing light in.