Any rod will work that does not have decorative finials. A U shaped rod. I would prefer sheers and drapery that go to the floor. But you can use what you have also. A roman shade can take the place of the sheers and mounted inside the frame. You can use ring clips for the drapes for easy opening and closing. Thank you for the new photos.

I agree with Diane's ideas! Grey is a nice color. The only thought I had on having a corner sink cabinet, you may not be happy with it in the end. You have a little corner, and the sink may be too small for you in the end along with not having any storage space. If you can't find any curtains that you love, try a cheap roller blind for now. It will give you a visual look and an idea if you want to stay with a curtain or going a bit modern with a patterned blind or even a roman type shade. It could turn the cozy look into a clean modern look. Framed mirrors are expensive. Call a glass company in your area and have them give you a price on mirrors. It might be quite nice to take the mirror down, and replace the wall there with a complete wall mirror to fit, stopping the mirror at the vanity, and continuing the mirror across the vanity between the sink and window. It will make your bathroom feel much bigger, even though you wont be able to see in the mirror over the sink. Close up the vanity doors with new door. Use props first (white poster to cover up the doors) etc. before you buy anything! Stick on tiles are a great idea! They clean nicely and look great. Although I wouldn't go with the wood look. Your bathtub tiles are old fashioned, go with a stick on floor tile that is easy to look at, try to get samples first. Remember Gray is a sleek clean modern color. It is not a cozy country color. If you don't like the grey in the end, maybe a real pale blue or butter yellow (that would be more of the cozy cottage look).

By "net curtains", do you mean "sheers"? If so, yes, sheers can be modern and are very popular right now.

Hmmm, I see what you mean. There are two aspects I would focus on - the door surrounds and the garden pathway/approach. For the doorway itself (depending on how much you want to spend), you could put a small porch over the door for shelter (with a light for evening visitors). Maybe add a (wider than the doorway itself) glass or trellis surround on the RHS of the door, or add a small deck/steps (over the top of the current ones) that extends the doorway outwards and sideways and provides a sheltered platform for people to stand on while waiting for you to welcome them. The trick would be keeping it in the style of the (stucco?) house - maybe use the blue trim alongside the doorway to add visual width. The second aspect would be creating a pathway leading to the front door. I wouldn't take it in from the street but rather curve across from the driveway. Maybe large pavers spaced for walking, set into a gravel pathway, with some small outdoor lights alongside, and create a garden with small shrubs on the LHS of the door out to the edge of the path to define the pathway to the door. Or if you were going to concrete the driveway at some point, you could make some matching concrete pavers, with a rougher aggregate surface, with some extra concrete. And finally, the door... the door itself doesn't show in the picture, but after you've created the doorway, you could either get a new door (with some glass in it - more welcoming), or just repaint your current door to match your doorway - possibly in the same blue as your trim - lovely! Good luck